Joshua Hines-Allen (born Joshua Allen, July 13, 1997) is an American professional football defensive end for the Jacksonville Jaguars of the National Football League (NFL). He played college football for the Kentucky Wildcats, winning the Chuck Bednarik Award and Bronko Nagurski Trophy as a junior. Hines-Allen was selected seventh overall by the Jaguars in the 2019 NFL draft and has received two Pro Bowl selections with the team.

Hines-Allen was born on July 13, 1997, to Kim and Robert Allen in Cumberland County, Virginia. He has a twin brother, Isaiah, and four older sisters. Due to a stutter, he spent part of his studies in New Jersey's special education system. Hines-Allen then went to live with his relatives in Alabama, attending Abbeville High School. He was later diagnosed with ADHD.

Although Hines-Allen grew up playing basketball, his uncle convinced him to try out for the high school football team. In his freshman year, he did not play a single snap in a game. In his sophomore year, he started as a varsity receiver, and in his junior year, he was an all-state receiver with 1,150 yards and 11 touchdowns. Hines-Allen decided to return to New Jersey for his senior year, attending Montclair High School. He switched position from receiver to defensive end, affecting his recruiting opportunities. During his sole season with the Mounties, Hines-Allen led the state in sacks that year and recorded a touchdown catch, as the team finished 11–1 and won the 2014 state title (after losing their first and only game of the season to Pascack Valley). After high school, Hines-Allen first committed to Monmouth, but later received an offer from Kentucky.

Despite Hines-Allen leading New Jersey in sacks as a senior, he was still very much under the recruiting radar. Four highly rated recruits who went on to become NFL players—Jabrill Peppers, Quenton Nelson, David Njoku, and Mike Gesicki—were fellow high school seniors in New Jersey. The recruiting website 247Sports rated Hines-Allen as a two-star prospect (out of a possible five), and ranked more than 2,000 players in the 2015 recruiting class ahead of him. John Fiore, at the time head coach at Montclair High, actively tried to get Rutgers to evaluate him, but the coaching staff there showed no interest. In a 2019 ESPN story on Hines-Allen, Fiore said about Rutgers' lack of interest, "Some people just couldn't see the potential in him. Kentucky did, and they won big. I told Rutgers, 'You guys are going to look foolish when he's drafted in the first round.'" In fact, when Hines-Allen made his verbal commitment to Monmouth, no Football Bowl Subdivision (FBS) school had offered him a scholarship, and no other NCAA Division I school, whether FBS or FCS, had made him an offer.

Hines-Allen's journey to Kentucky began with West Orange High School head coach Jim Matsakis, whose team had faced Montclair High in his senior year. Matsakis made a phone call to his brother Louie, who was then on the Wildcats coaching staff. Louie first contacted D. J. Eliot, then Kentucky's outside linebackers coach, who in turn contacted the then-defensive backs coach Derrick Ansley while the latter was on a recruiting trip in the Washington metropolitan area. Eliot told Ansley to detour to New Jersey to meet with Hines-Allen and arrange for an immediate campus visit if he was at least 6'4". While he had verbally committed to Monmouth, Hines-Allen was still available for recruitment because he had yet to sign a letter of intent. Hines-Allen visited Kentucky and signed with the Wildcats three days later.

Following his junior season in which he had 7 sacks and 10.5 tackles for loss, Hines-Allen was named to the Associated Press Second-team and the All-Southeastern Conference (SEC) team. After this season, Hines-Allen considered forgoing his senior year and declaring for the 2018 NFL draft. He later decided to return to Kentucky for his senior season. He also dropped into coverage on 141 snaps and allowed just 130 yards on 19 targets without allowing a touchdown. Hines-Allen was a unanimous All-American, won the Chuck Bednarik Award, the Bronko Nagurski Trophy, and was named the SEC Defensive Player of the Year. Allen finished his career as Kentucky's all-time sack leader with 31.5.

Hines-Allen was selected by the Jacksonville Jaguars with the seventh overall pick in the first round of the 2019 NFL draft. On May 23, 2019, Hines-Allen signed his four-year rookie contract, worth a fully guaranteed $21.8 million, including a $14.6 million signing bonus.

During Week 3 against the Tennessee Titans, Hines-Allen recorded his first two career sacks on Marcus Mariota as the Jaguars won 20–7. Two weeks later against the Carolina Panthers, he sacked Kyle Allen once in the 34–27 road loss. During Week 8 against the New York Jets, Hines-Allen sacked Sam Darnold twice in the 29–15 win.