Mamoru Kodai is the commander of the destroyer Yukikaze and the elder brother of Susumu Kodai. The name may refer to:
- Mamoru Kodai (OS), an Earth Defense Force officer and the father of Sasha Kodai in the original Space Battleship Yamato, Yamato: The New Voyage, and Be Forever Yamato
- Mamoru Kodai (2199), a United Nations Cosmo Navy lieutenant commander in Space Battleship Yamato 2199
- Mamoru Kodai (live action film), an Earth Defense Force captain in Space Battleship Yamato (live action film)
- Alex Wildstar, an Earth Defense Force captain in the Star Blazers continuity