Kodai is a human family name shared by:
From the original series and its sequels[]
- Susumu Kodai (OS), Earth Defense Force officer serving aboard the space battleship Yamato
- Mamoru Kodai (OS), commander of Yukikaze and elder brother of Susumu
- Takeo Kodai, father of Susumu and Mamoru
- Akiko Kodai, mother of Susumu and Mamoru
- Sasha Kodai, daughter of Mamoru and Queen Starsha
- Yuki Kodai (formerly Yuki Mori), wife of Susumu
- Miyuki Kodai, daughter of Susumu and Yuki
From Space Battleship Yamato 2199 and its sequels[]
- Susumu Kodai (2199), United Nations Cosmo Navy officer serving aboard Yamato
- Mamoru Kodai (2199), commander of Yukikaze and elder brother of Susumu
- Noriko Kodai, mother of Susumu and Mamoru
- Tsuyoshi Kodai, father of Susumu and Mamoru
- Maki Kodai, aunt of Susumu and Mamoru
- Yoshio Kodai, uncle of Susumu and Mamoru
From the live action film[]
- Susumu Kodai (live action film), scavenger and Earth Defense Force officer serving aboard Yamato
- Mamoru Kodai (live action film), captain of Yukikaze and elder brother of Susumu