Alan Keith Branch (born December 29, 1984) is an American former professional football player who was a defensive tackle in the National Football League (NFL). He played college football for the Michigan Wolverines and was selected by the Arizona Cardinals in the second round of the 2007 NFL draft. He also played in the NFL for the Seattle Seahawks, Buffalo Bills, and New England Patriots.

Branch attended Cibola High School in Albuquerque, New Mexico. In addition to playing on the defensive line, Branch also played tight end as well as running back and punt returner in high school. He scored three rushing touchdowns and two receiving touchdowns in his senior season and five punt return touchdowns for his career.

Branch was a fairly highly regarded recruit coming out of high school, ranked as high as #6 nationally among defensive tackles.

Branch was also a three-year starter on the varsity basketball team, earning all-district honors as a sophomore and was second-team all-state as a junior.

Branch, along with fellow defensive all-star LaMarr Woodley, anchored one of the best defenses in college football in 2006. He had 57 tackles, 17 tackles for loss, and nine sacks in 35 career games at Michigan. He had his first interception and a fumble recovery against Ohio State on November 18, 2006. Branch played both defensive tackle and defensive end at Michigan.

He earned the following accolades while at Michigan:

Branch was selected by the Arizona Cardinals with the 33rd overall pick in the second round of the 2007 NFL draft. The Cardinals acquired the pick from the Oakland Raiders. In the 2008 NFL season, the Cardinals reached Super Bowl XLIII, but lost 27–23 to the Pittsburgh Steelers.

The Seattle Seahawks signed Branch to a two-year contract on July 28, 2011.