The Battle of Olympus is a 1988 action role-playing video game for the Nintendo Entertainment System. It was released in North America in 1989, in Europe in 1991. A port for the Game Boy was also released.

Primarily a sidescroller with some light platforming, the player is a hero with a sword and shield, while just a handful of secondary items come along later in the game, mostly for the purpose of advancement as the protagonist move to new areas. He can find upgrades maximum health, protection, and speed. The biggest differences in combat from Zelda II are the lack of the downward stab in midair, and the lack of the sword beam at full health. However, The Battle of Olympus does have a sword later in the game that can shoot beams, but doing so damages the health bar if a certain item is not found first.

The Battle of Olympus is somewhat non-linear and there are some optional side quests that can make the game easier in the long run, leading to a secret item or power-up from one of the gods.

The final battle brings to the Temple of Hades in fight with the ruler of the underworld in a two-stage event. The first is a blind fight against a shadow reflection, and then the final form is of Hades himself.