Angle made his first appearance at a professional wrestling event in 1996, with his in-ring debut following in 1998. He had previously turned down an offer to join the WWF, but signed a multi-year contract with the company that year, and participated in his first televised storyline in March 1999. After months of unaired matches, Angle made his official debut that November and received his first major push in the company in February 2000, when he held the European Championship and the Intercontinental Championship simultaneously. Four months later he won the King of the Ring tournament, and not long after, began pursuing the WWF Championship, which he won in October; this capped off a rookie year which is considered by many as the greatest in professional wrestling history. Throughout his tenure in the company, Angle was a six-time world champion (a four-time WWF/E Champion, a one-time World Heavyweight Champion, and a one-time WCW Champion), and he also held the WCW United States Championship, Intercontinental Championship, European Championship, Hardcore Championship, and WWE Tag Team Championship once each. He is the tenth Triple Crown Champion and the fifth Grand Slam Champion in WWE history.
After leaving WWE, Angle joined TNA, where he became a record six-time TNA World Heavyweight Champion, a two-time TNA World Tag Team Champion, and a one-time TNA X Division Champion, also the second Triple Crown Champion in TNA history and the only one to hold all the required titles at once. While in TNA, his then real-life wife Karen began accompanying him to the ring and playing a part in his on-screen storylines. As part of TNA, Angle has also made appearances for New Japan Pro Wrestling (NJPW) as well as Inoki Genome Federation (IGF), where he held their version of the IWGP Heavyweight Championship.
Angle is the only wrestler in history to be a Triple Crown winner in both WWE and TNA, and to have held every currently active championship in both companies. He is only one to have held the WWE, WCW, TNA, IWGP, and World Heavyweight Championships in his career. Angle is also a two-time King of the Mountain winner, winning at the 2007 and 2009 Slammiversary pay-per-view event, making him the only wrestler to have been both King of the Ring (WWE) and King of the Mountain (TNA). Between WWE, TNA, and Japan, Angle has won 13 world championships and 21 total championships. In 2010, the Wrestling Observer Newsletter named Angle the Wrestler of the Decade of the 2000s, and in 2013 he was the second inductee into the TNA Hall of Fame. He has also headlined multiple pay-per-view events for both WWE and TNA, including the flagship event for both promotions, WWE WrestleMania and TNA Bound for Glory. In 2013, Kurt Angle was inducted into the TNA Hall of Fame. On January 16 2017, it was announced that Angle would headline the WWE Hall of Fame.
- International Wrestling Grand Prix Heavyweight Championship
- Power Pro Wrestling Heavyweight Championship
- TNA World Heavyweight Championship
- TNA World Tag Team Championship
- TNA X Division Championship
- WCW Championship
- WCW United States Championship
- WWE World Heavyweight Championship
- WWE Championship
- WWE European Championship
- WWE Hardcore Championship
- WWE Intercontinental Championship
- WWE Tag Team Championship