Kyle Raymond Orton (born November 14, 1982 in Altoona, Iowa) is an American football quarterback for the Denver Broncos of the National Football League. He was drafted by the Chicago Bears in the fourth round of the 2005 NFL Draft. He played college football at Purdue.

Orton wore uniform No. 18 in honor of former Nebraska Cornhuskers' quarterback Brook Berringer, who died in a plane crash in 1996. Orton grew up a Husker fan, but chose to attend a program with a stronger passing attack. Orton tied former Purdue quarterback Drew Brees' record for the number of passing yards in a game (522 vs. Indiana Hoosiers) and is one of only three Purdue quarterbacks to start at least three consecutive bowl games (Brees and Mark Herrmann being the other two). Orton started in the 2001 Sun Bowl, the 2002 Sun Bowl, the 2003 Capital One Bowl, and the 2004 Sun Bowl.

In 2004, Orton was the preseason third-team "All-American" quarterback, behind USC's Matt Leinart and Oklahoma's Jason White. Orton had a nice start to the season, having led Purdue to a 5-0 start with 18 touchdowns and no interceptions. Orton was a Heisman Trophy hopeful, until a late 4th quarter Orton fumble was run back for a touchdown to give undefeated 12th ranked Wisconsin the winning score in West Lafayette and gave 5th ranked Purdue its first of several losses that season. Later that season, he received multiple injuries in consecutive games against Michigan and Northwestern that forced him out of his starting position for a month, while being replaced by Brandon Kirsch during that time.