Ahtyba Rubin (/ɑːˈtɑːbə/ ah-TAH-bə;[1] born July 25, 1986) is a former American football defensive tackle.

Born in Fort Belvoir, Virginia, Rubin graduated from Escambia High School in Pensacola, Florida in 2004, the same high school as former Cleveland Browns teammate Trent Richardson, and NFL Hall of Famer Emmitt Smith.

As a senior, Rubin played in all of the Cyclones' games, registering 42 tackles (with four for loss) and recording 1.5 sacks.

Following his impressive senior season at Iowa State, Rubin was regarded as a "productive NFL starter" at nose tackle, and projected a mid-third round pick by Sports Illustrated.

In the 2010 offseason the Browns traded defensive end Corey Williams to the Detroit Lions, moved former starting nose Tackle Shaun Rogers to defensive end and promoted Rubin to starter due to his performance in 2009.

2010 was the best season of Rubin's young career, highlighted by his 87 tackles and an interception against Kansas City's Matt Cassel.