The GAT-X105 Strike Gundam is a prototype multi-mode mobile suit introduced in the anime Mobile Suit Gundam SEED. Its primary pilot was Kira Yamato before it was passed down to former mobile armor ace pilot, Mu La Flaga.

The Strike Gundam is the most versatile of the five Gundams in the Earth Alliance's G Project and can be easily configured for various types of combat. Using its Striker Packs, it can be outfitted for high mobility combat (Aile Strike), long-range assault (Launcher Strike), or melee combat (Sword Strike). In addition, the Striker packs are also equipped with backup batteries that can extend the Strike's operation time. Built on the X100 series frame first adopted by the GAT-X102 Duel Gundam, the Strike also has the Phase Shift armor system. In terms of armament, the Strike itself is equipped only with two head-mounted CIWS and a pair of combat knives stored in the side skirt armor, but it can also be armed with a bazooka, a shield, and a beam rifle. Later on, the Strike Gundam was equipped with a Natural-use OS to allow its new pilot, Mu La Flaga, to control the suit effectively.