Kyle Kingsbury is a retired mixed martial artist. A professional competitor from 2006-2014, Kingsbury also formerly competed for King of the Cage and was a cast member of Spike TV's The Ultimate Fighter: Team Nogueira vs. Team Mir.

Kingsbury attended Monta Vista High School in Cupertino, California. Kingsbury played football for the school earning numerous awards including "Defensive Lineman of the Year" in the Santa Clara Valley League (2000), two-time first-team all-league selection (1999 and 2000), and second-team All-Central Coast Section honors behind first-team selection Jared Allen his senior year. Kyle was the captain for both his football team and his wrestling team.

After graduating in 2000, Kyle attended Mesa Community College and earned his associate's degree in 2003.

Kingsbury transferred to Arizona State University where he was a walk-on for the football team and scout team member in the 2003.  In 2004, Kingsbury saw some playing time, including in ASU's 2004 Sun Bowl victory over Purdue University.

Kingsbury fought Ryan Bader for a spot on the Ultimate Fighter, but he lost to Bader by arm-triangle choke in the second round. After the discovery of two injured fighters, Kingsbury was brought in to replace one of them. He was picked by Antonio Nogueira's team and Nogueira called Kingsbury the leader of the team. In the first round of fights, Krzysztof Soszynski defeated Kingsbury. In the finale Kingsbury was matched up against Tom Lawlor. Kingsbury lost a unanimous decision to Lawlor at the Ultimate Fighter Finale.

Kingsbury made his UFC debut against former The Ultimate Fighter: Team Nogueira vs. Team Mir against Tom Lawlor. He was defeated via unanimous decision on the preliminary card at the Ultimate Fighter 8 Finale. Even though Kingsbury did not win any fights on TUF and did not win his debut, the UFC decided to keep him signed.

At UFC 104, Kyle fought in his second UFC bout against Razak Al-Hassan. The fight went to the judges and was scored in the favor of Kyle who took a split decision.

Kingsbury defeated Jared Hamman via unanimous decision in September, 2010 at UFC Fight Night 22 in a bout that earned Fight of the Night honors. Kingsbury improved his UFC record to 3-1 after a TKO victory over Ricardo Romero in 0:21 seconds of the first round, in February, 2011 at UFC 126.

Kingsbury faced Fabio Maldonado in June, 2011 at the Ultimate Fighter 13 Finale. He won the fight by unanimous decision and also earned the Fight of the Night honors for his performance. Kingsbury next faced Stephan Bonnar in November, 2011 at UFC 139. He lost the fight via unanimous decision.

Kingsbury fought UFC newcomer, Glover Teixeira in May, 2012 at UFC 146. Kingsbury was submitted by arm triangle.

Kingsbury lost to debuting Jimi Manuwa in September, 2012 at UFC on Fuel TV 5 by TKO.

Kyle is a huge supporter of the U.S. military, and has gone on 12 tours to visit troops stationed overseas. The tours range from 10-17 days, often going to upwards of 7 countries on a single tour. He most recently went to Afghanistan and Kuwait for 2 weeks in January of 2014, only returning home for 6 days, before departing again for a Western Hemisphere tour lasting 10 days. On tour, Kyle has been to Iraq, Afghanistan, Bahrain, Dubai, Kuwait, Oman, Qatar, Abu Dhabi, Germany, Belgium, England, Cuba, France, Honduras, Puerto Rico, Djibouti, and The Bahamas.

Kingsbury stepped into the cage against Patrick Cummins on July 26, 2014 at UFC on Fox 12, losing a unanimous decision.  Subsequently, Kingsbury announced his retirement from MMA.