Ositadimma "Osi" Umenyiora (born November 16, 1981) is an American football defensive end in the National Football League for the New York Giants. Umenyiora is one of three British-born players to have won a Super Bowl ring, joining Scott McCready and Giants teammate Lawrence Tynes. He missed the 2008 season, undergoing surgery for knee cartilage damage suffered during an exhibition against the New York Jets. Umenyiora has been selected for the Pro Bowl twice, and holds the Giants franchise record for most sacks in one game, coming against the Philadelphia Eagles in 2007.
Umenyiora was born in Golders Green, London to Nigerian parents. His family moved back to Nigeria and later to Auburn, Alabama, where he started playing football in high school. Of Igbo descent, his full first name means in Igbo "from today things will be good".
He attended Auburn High School with Dallas Cowboys linebacker Demarcus Ware and Washington Redskins linebacker Marcus Washington.