Jackson Dean Heflin (born March 8, 1998) is an American professional football defensive end for the New York Jets of the National Football League (NFL). He played college football for the Northern Illinois Huskies and Iowa Hawkeyes.
Heflin played college football at Northern Illinois for four seasons, earning second-team all-Mid-American Conference honors for the Huskies in 2019. In 2020, he transferred to Iowa and started 2020 at defensive tackle next to Daviyon Nixon.
In 2021, Heflin signed with the Green Bay Packers as an undrafted free agent, and made the team's Opening Day roster. He was released on January 21, 2022. The Packers re-signed Heflin to a futures contract on January 27, following their playoff exit. He was waived on August 30, and was re-signed to the practice squad the following day. On December 13, Heflin was released from the practice squad.
On December 15, 2022, Heflin was signed to the New York Giants' practice squad. He was released from the practice squad on January 3, 2023. The Giants re-signed Heflin to their practice squad on January 6, then released him four days later.
On January 8, 2023, Heflin signed with the Houston Roughnecks of the XFL. On May 8, Heflin was named to the All-XFL team. He was released from his contract on May 15.
On May 15, 2023, Heflin signed with the New Orleans Saints. He was waived on August 29, and was subsequently re-signed to the team's practice squad.
Following the end of the regular season, the Saints signed Haener to a reserve/future contract on January 8, 2024. On August 27, Heflin was waived by the Saints.
On December 3, 2024, Heflin was signed to the Los Angeles Rams' practice squad.
Heflin signed a reserve/future contract with Los Angeles on January 20, 2025. On August 26, Heflin was waived by the Rams as part of final roster cuts and re-signed to the practice squad the next day.
On February 2, 2026, Heflin signed a reserve/future contract with the New York Jets.