Last Updated on October 30, 2026 by Valentim Tereshkova
Will Kacmarek is an American professional football player who plays as a tight end for the Miami Dolphins in the National Football League (NFL). Known for his physical playing style, outstanding blocking ability and determination, Kacmarek developed from an overlooked high school prospect into a national championship-winning college football player before entering the NFL. Away from the field, he comes from a family that has supported his athletic ambitions throughout his career.
Born on February 12, 2003, in St. Louis, Missouri, William Kacmarek is the son of Mark and Celine Kacmarek. He also has an older brother named Daniel Kacmarek, according to his official Ohio University athletics biography. Although his parents and brother are publicly identified, details about his romantic relationships and children remain private. Here is what is known about Will Kacmarek’s girlfriend, children, parents and siblings.
Will Kacmarek’s Girlfriend: Is He Dating Anyone?
As of now, Will Kacmarek has not publicly confirmed whether he is currently in a romantic relationship. The Miami Dolphins tight end generally keeps his dating life private, choosing to focus public attention on football and his professional development.
Although Kacmarek attracted national recognition during his time at Ohio State University, reliable sports publications have not established the identity of a current girlfriend through a verified interview or official announcement.
During his college football career, most media coverage concentrated on his transition from Ohio University to Ohio State, his development as a blocking tight end and his contributions to the Buckeyes’ national championship-winning team.
Kacmarek has spoken about the importance of family support and maintaining strong relationships with people who believe in him. However, those statements have not included confirmed information about a romantic partner.
There is also no verified public announcement confirming that he is engaged or married.
Consequently, his current relationship status remains undisclosed. The absence of publicly confirmed information does not necessarily mean he is single, only that he has not publicly identified a partner.
Will Kacmarek’s Children: Does He Have a Son or Daughter?
As of now, there is no publicly verified information confirming that Will Kacmarek has children.
The Miami Dolphins tight end has not publicly announced becoming a father, and established sports publications have not reliably identified any sons or daughters belonging to him.
His official college and NFL biographies do not provide information about children, while his interviews have primarily addressed football, education and professional ambitions.
There are no verified names, birth dates or other publicly established details concerning any children of his own.
Therefore, his parental status remains undisclosed rather than definitively established as having no children.
Will Kacmarek’s Parents: Who Are His Mother and Father?
Will Kacmarek’s parents are Mark Kacmarek and Celine Kacmarek. Their identities are confirmed through Ohio University’s official football biography, which identifies Will as their son.
The family is associated with St. Louis, Missouri, where Kacmarek grew up and attended Mary Institute and Saint Louis Country Day School.
Although his parents have generally maintained private lives, Kacmarek has publicly acknowledged that family support helped him overcome challenges during his football career.
Mark Kacmarek – Will Kacmarek’s Father
Mark Kacmarek is Will Kacmarek’s father, according to official Ohio University athletics records.
Mark is part of the immediate family that supported Will as he pursued opportunities in high school and college football.
Will developed his athletic abilities in St. Louis before moving to Athens, Ohio, to begin his college football career.
His journey was not straightforward. Despite demonstrating talent as a high school player, he initially struggled to attract scholarship offers from major college football programs.
Kacmarek eventually accepted an opportunity at Ohio University, where he developed into a productive tight end.
In an April 2026 interview with Eleven Warriors, he acknowledged the importance of family members who believed in him when he moved from Ohio to Ohio State.
He explained that adapting to a more competitive football environment had not been easy, but support from his family and coaches helped him succeed.
Although Mark is publicly identified as his father, reliable publications have not extensively documented his occupation, educational background or personal history.
There is also no verified information confirming that Mark previously played professional or college football.
As of now, his publicly established biographical details remain limited.
Celine Kacmarek – Will Kacmarek’s Mother
Celine Kacmarek is Will Kacmarek’s mother, whose identity is confirmed in his official Ohio University football biography.
Like her husband, Celine has maintained a relatively private life despite her son’s growing recognition in professional football.
Will spent his childhood in St. Louis, Missouri, where he developed an interest in athletics and participated in football and lacrosse.
He eventually became a standout high school player and earned the opportunity to compete at the NCAA Division I level.
Although Will has publicly acknowledged the importance of family support, he has not provided detailed interviews describing his mother’s individual role in his athletic development.
Reliable sources also do not establish Celine’s occupation, educational qualifications or professional activities.
Consequently, her confirmed public identity is primarily documented through official college football records.
How Will Kacmarek’s Family Supported His Career
Family support became particularly important when Kacmarek decided to transfer from Ohio University to Ohio State University.
After establishing himself as a productive player at Ohio, he believed that competing in a stronger football conference would help him reach his full potential.
However, transferring to Ohio State meant joining a program filled with highly recruited players and facing increased competition for playing time.
During an April 2026 interview with Eleven Warriors, Kacmarek reflected on the challenges he experienced after joining the Buckeyes.
He explained that moving from the Mid-American Conference to Ohio State was difficult because of the higher level of competition.
Nevertheless, he credited his family and coaches with believing in him throughout the transition.
Their encouragement helped him establish himself within the program and eventually contribute to a national championship-winning team.
Although Kacmarek did not individually identify which relatives provided particular forms of support, his comments confirmed that family remained important during his development.
Will Kacmarek’s Siblings: Meet His Older Brother Daniel Kacmarek
Will Kacmarek has one publicly confirmed sibling: his older brother, Daniel Kacmarek.
Daniel’s identity is officially documented in Will’s Ohio University athletics biography, which identifies him as the younger of two brothers.
Daniel Kacmarek – Will Kacmarek’s Older Brother
Daniel Kacmarek is Will Kacmarek’s older brother and a member of his immediate family.
His name appears in Ohio University’s official 2023 football roster biography for Will, alongside their parents, Mark and Celine Kacmarek.
The university’s record confirms their family relationship but does not provide additional details about Daniel’s personal life.
Although Will has become a recognizable professional athlete, Daniel has generally remained outside public attention.
There is no independently verified information establishing Daniel’s age, occupation, educational background or current activities.
Reliable sources also do not confirm whether Daniel participated in organized college football or other competitive sports.
Consequently, his identity as Will’s older brother is established, but further personal details remain private.
Does Will Kacmarek Have a Sister?
As of now, there is no publicly verified information confirming that Will Kacmarek has a sister.
His official Ohio University biography identifies an older brother named Daniel but does not mention any sisters.
Other established college and NFL biographies also do not provide evidence of additional siblings.
Therefore, Daniel remains Will Kacmarek’s only publicly confirmed sibling.
Will Kacmarek’s Childhood and Family Background
Will Kacmarek was born and raised in St. Louis, Missouri, where he developed an interest in several sports.
He attended Mary Institute and Saint Louis Country Day School, commonly known as MICDS, where he became a standout football player.
During high school, Kacmarek demonstrated versatility by contributing on both offense and defense.
He was primarily recognized as a defensive lineman, although he also participated in the passing game.
According to Ohio University’s official football biography, he finished his high school career with 41 receptions for 510 receiving yards.
On defense, he accumulated 162 tackles and 23 sacks.
Kacmarek also served as a two-year team captain, demonstrating leadership qualities and earning the trust of his coaches and teammates.
During his senior season, he helped MICDS finish with a 7-1 record and reach the Missouri state championship game.
Despite his achievements, Kacmarek did not receive the same level of recruiting attention as many other highly regarded high school prospects.
The recruiting process was complicated by the COVID-19 pandemic, which affected opportunities for college coaches to evaluate players.
Ohio University eventually became his only Football Bowl Subdivision scholarship offer.
Although the limited recruiting interest was disappointing, Kacmarek accepted the opportunity and began working toward his professional ambitions.
Did Will Kacmarek Play Other Sports Growing Up?
Yes. Will Kacmarek participated in multiple sports during his childhood, including lacrosse.
During his April 2026 introductory press conference with the Miami Dolphins, he explained that playing lacrosse helped develop his athletic abilities.
Kacmarek played as a defender, a position that required him to move quickly, maintain balance and react to opponents.
He credited the sport with helping improve his footwork, particularly because he frequently competed against smaller and faster players.
Those experiences later became valuable in football, where a tight end must move efficiently while blocking defenders and running receiving routes.
Kacmarek also explained that participating in different sports helped him develop a competitive mentality.
His athletic background contributed to the versatility that eventually made him an attractive NFL prospect.
Will Kacmarek’s College Football Career
Will Kacmarek began his college football career at Ohio University in 2021.
He initially joined the Bobcats as a player who had primarily been recruited for his defensive abilities in high school.
However, he transitioned to tight end and began developing his receiving and blocking skills.
During his freshman season, Kacmarek appeared in two games before taking on a larger role in subsequent years.
In 2022, he appeared in all 14 games and recorded 20 receptions for 264 yards.
His production continued in 2023, when he started 11 games and recorded 22 receptions for 243 yards and two touchdowns.
He developed a reputation as a dependable blocker who could also contribute to the passing game.
By the end of his time at Ohio, Kacmarek had accumulated 42 receptions for 507 yards and two touchdowns.
His development attracted interest from larger college football programs, eventually leading him to enter the transfer portal.
Why Will Kacmarek Transferred to Ohio State
Following the 2023 season, Kacmarek decided to transfer to Ohio State University.
During a February 2024 interview with Eleven Warriors, he explained that he had always believed he possessed the ability to compete at the highest level of college football.
Although he appreciated the opportunities Ohio University provided, he wanted to test himself against stronger competition.
Ohio State offered him the chance to compete in the Big Ten Conference and join one of the country’s most successful football programs.
The move was challenging because Kacmarek had to prove himself against highly recruited teammates.
However, he gradually established a role as a dependable blocking tight end.
During the 2024 season, he appeared in 12 games and recorded eight receptions for 86 yards.
He also contributed as a blocker during Ohio State’s successful College Football Playoff campaign.
The Buckeyes eventually won the national championship following the 2024 season, giving Kacmarek one of the most significant achievements of his college football career.
Will Kacmarek’s Final Season at Ohio State
Kacmarek returned to Ohio State for the 2025 college football season and continued developing as an important member of the offense.
He appeared in all 14 games, making 10 starts.
His blocking ability remained one of his greatest strengths, particularly when helping the Buckeyes establish their running game.
He also recorded 15 receptions for 168 yards and two touchdowns.
His performances earned him honorable mention All-Big Ten recognition.
By the end of his college career, Kacmarek had appeared in 55 games and accumulated 65 receptions for 761 receiving yards and four touchdowns.
He also earned recognition as an Ohio State Scholar-Athlete while studying human development and family services.
His combination of physical blocking, receiving ability and experience helped improve his prospects for the NFL Draft.
Will Kacmarek’s NFL Career With the Miami Dolphins
The Miami Dolphins selected Will Kacmarek in the third round of the 2026 NFL Draft with the 87th overall pick.
His selection represented the fulfillment of a professional ambition that had begun during his childhood in St. Louis.
Kacmarek became one of two Ohio State tight ends selected in the 2026 draft, alongside Max Klare, who joined the Los Angeles Rams.
The Miami Dolphins valued Kacmarek’s physical playing style and ability to contribute immediately as a blocker.
During the draft, Dolphins general manager Jon-Eric Sullivan praised his toughness, work ethic and potential to strengthen the team’s rushing attack.
Ohio State head coach Ryan Day also described him as a dependable player whose blocking ability and football intelligence would translate well to professional football.
On June 2, 2026, Miami officially announced that Kacmarek had signed his rookie contract.
He subsequently participated in the team’s offseason training program and training camp.
During his rookie season, Kacmarek began contributing as a tight end in Miami’s offense, particularly in blocking situations.
He also recorded his first NFL receptions during the 2026 season.
As of now, Kacmarek continues his professional football career with the Miami Dolphins, wearing jersey number 89.
Frequently Asked Questions About Will Kacmarek’s Family
Who is Will Kacmarek’s girlfriend?
As of now, Will Kacmarek has not publicly confirmed the identity of a current girlfriend. His romantic relationship status remains private.
Is Will Kacmarek married?
There is no verified public announcement confirming that Will Kacmarek is married.
Does Will Kacmarek have children?
There is no publicly verified information confirming that Will Kacmarek has a son or daughter.
Who is Will Kacmarek’s father?
Will Kacmarek’s father is Mark Kacmarek, whose identity is confirmed in Ohio University’s official football biography.
Who is Will Kacmarek’s mother?
His mother is Celine Kacmarek, who is also identified in his official Ohio University athletics records.
Does Will Kacmarek have siblings?
Yes. Will Kacmarek has an older brother named Daniel Kacmarek.
Who is Will Kacmarek’s brother?
Daniel Kacmarek is Will Kacmarek’s older brother. His identity is confirmed in Will’s official college football biography, although his personal and professional background remains private.
Does Will Kacmarek have a sister?
There is no publicly verified information confirming that Will Kacmarek has a sister.
Where was Will Kacmarek born?
Will Kacmarek was born on February 12, 2003, in St. Louis, Missouri, United States.
What is Will Kacmarek’s full name?
His full name is William Kacmarek.
Where did Will Kacmarek go to high school?
Will Kacmarek attended Mary Institute and Saint Louis Country Day School in St. Louis, Missouri.
Where did Will Kacmarek play college football?
Will Kacmarek played college football at Ohio University from 2021 to 2023 before transferring to Ohio State University for the 2024 and 2025 seasons.
Did Will Kacmarek win a national championship?
Yes. Will Kacmarek was part of the Ohio State team that won the College Football Playoff national championship following the 2024 season.
Which NFL team does Will Kacmarek play for?
As of now, Will Kacmarek plays tight end for the Miami Dolphins, who selected him in the third round of the 2026 NFL Draft.
Valentim Tereshkova is a sports journalist and NFL analyst specializing in team dynamics, scheme breakdowns, and league-wide trends. Covering everything from offseason roster construction and Draft developments to Sunday game plans and Super Bowl contenders, he delivers clear, sharp commentary on the gridiron. Valentim combines stat-driven analysis with a passion for football storytelling to give readers an expert look into the AFC and NFC.
