Nicholas John Bosa (born October 23, 1997) is an American football defensive end for the San Francisco 49ers of the National Football League (NFL). He played college football for the Ohio State Buckeyes and was selected second overall by the 49ers in the 2019 NFL draft. Bosa was named NFL Defensive Rookie of the Year and helped his team reach Super Bowl LIV. In 2022, he won the NFL Defensive Player of the Year award. He is the son of former NFL defensive end John Bosa and younger brother of Joey Bosa, currently a linebacker for the Los Angeles Chargers.
Bosa played in all 13 games as a true freshman at Ohio State in 2016, recording 29 tackles, seven of which were for a loss, and five sacks.
On September 20, 2018, it was reported that Bosa underwent core muscle surgery, ruling him out indefinitely. On October 16, Bosa announced that he was withdrawing from Ohio State for the rest of the season. After the season, Bosa decided to forgo his senior year and enter the 2019 NFL draft.
Bosa was selected by the San Francisco 49ers in the first round with the second overall pick in the 2019 NFL draft. On July 25, 2019, Bosa signed a 4-year deal with the 49ers worth $33.5 million featuring a $22.5 million signing bonus and a fifth year option.
During Week 2 against the New York Jets, Bosa suffered a torn ACL and was ruled out for the rest of the season. He was placed on injured reserve on September 23, 2020. During Bosa's rehab, he hired a private chef and took on a strict, protein-heavy diet as part of his recovery.
On April 25, 2022, the 49ers picked up the fifth-year option on Bosa's rookie contract. On December 1, Bosa was announced by the NFL as the NFC Defensive Player of the Month for the month of November. In three games in November, he recorded five tackles for a loss, three sacks, and 10 quarterback hits, with the 49ers going 3–0 during that span. In Week 13, Bosa had three sacks, two tackles for loss, and a forced fumble in a 33–17 win over the Dolphins, earning NFC Defensive Player of the Week. In Week 16, he had seven tackles, two sacks, and a forced fumble in a 37–20 win over the Washington Commanders, earning his second NFC Defensive Player of the Week honor of the season. He was named as a Pro Bowler for the third time. He was named as first team All-Pro for the first time. Bosa led the league in sacks during the regular season, recording 18.5 sacks for 138 yards in 16 games. At the conclusion of the season Bosa was named the league's Defensive Player of the Year. He was ranked fourth by his fellow players on the NFL Top 100 Players of 2023.
On September 6, 2023, after holding out on a deal with the 49ers for 44 days, Bosa signed a five-year, $170 million contract extension, including $122.5 million guaranteed, making him the highest-paid defensive player in NFL history.