The 2005 Against All Odds was a professional wrestling pay-per-view (PPV) event produced by Total Nonstop Action Wrestling (TNA), which took place on February 13, 2005, at the TNA Impact! Zone in Orlando, Florida. It was the first event under the Against All Odds chronology. Eight matches were featured on the event's card.

The main event was for the NWA World Heavyweight Championship between the champion, Jeff Jarrett, and the challenger, Kevin Nash, in which Jarrett won to retain the championship. Another featured match was an Iron Man match for the TNA X Division Championship, in which the wrestler with the most scoring conditions after thirty minutes would win. The champion, A.J. Styles, defeated the challenger, Christopher Daniels, to retain the championship in this match. Multiple bouts were scheduled on the undercard. One saw Abyss defeat Jeff Hardy in a match where the competitors had to climb a ladder and retrieve an envelope to become number one contender to the NWA World Heavyweight Championship, in what is called a Full Metal Mayhem match. The other being for the NWA World Tag Team Championship between the champions, America's Most Wanted (Chris Harris and James Storm) (AMW), and Kid Kash and Lance Hoyt; AMW claimed victory in the match.

The event marked the debut of the Full Metal Mayhem match, which later became one of TNA's most successful match types. The professional wrestling section of the Canadian Online Explorer website rated the entire event a 7 out of 10 stars, which was the same rating as the 2006 event.