Hajime Saito is a leader of combat forces fighting in the service of Earth. The name may refer to:
- Hajime Saito (OS), a Space Cavalry commander in Space Battleship Yamato 2 and Farewell to Space Battleship Yamato
- Hajime Saito (2199), a United Nations Cosmo Marine sergeant major in Space Battleship Yamato 2199
- Hajime Saito (live action film), commanding officer of the Space Commandos in Space Battleship Yamato (live action film)