The MSN-001 Delta Gundam (aka δ Gundam) was a conceptual mobile suit design which was never constructed but would be further developed in the form of the MSN-00100 Hyaku Shiki and MSN-001A1 Delta Plus. This unit was first featured in the Gundam MS Graphica photo-novel and later the game Mobile Suit Gundam UC (The Postwar) and UC-MSV.

This machine is how the MSN-00100 Hyaku Shiki, which was initially developed in the Zeta Project as a transformable mobile suit but completed as a non-transformable mobile suit due to problems with insufficient frame strength, would appear if completed as a transformable mobile suit. While Anaheim Electronics was trying various approaches to develop a production model of the Zeta series as a transformable mobile suit, it also simultaneously conducted a reinvestigation of the shelved Delta plan.

The Delta Gundam is armed with the standard armaments of a mobile suit, vulcan guns, a beam rifle, beam sabers, and a shield. It also features the Anti-Beam Reflective Coating featured on the Hyaku Shiki.