Holy Diver (Japanese: ホーリー・ダイヴァー, Hepburn: Hōrī Daivā) is a 1989 Japanese video game for the Nintendo Famicom home console. It was developed and published by Irem.

The game consists of six stages in total. The player can learn magic spells at the completion of each level, and defeating the end level boss. Such as a magic spell that can freeze lava.

It is similar to the game Getsu Fūma Den. In fact, one of the stages has sprites and graphics similar to those found in Konami's other game, Contra (the final boss is also very similar to Contra's). The HUD is like the one used in Nintendo's Zelda II: The Adventure of Link.

The player has an infinite supply of fireballs to attack enemies.

Enemies in the game include gargoyles, and flying eyeballs.

In order to find and defeat Black Slayer, the player must travel through six stages, which primarily consist of forests, castles, and caverns, all while seeking the Five Crimson Family Seals. The seals are powerful magic spells, which are Twin Fire, Blizzard, Rock Breaker, Overdrive and Thunder. In addition to acquiring the seals, the player must also seek out the Bracelet, Jump Boots, Wizard's Staff, and the Cape of Protection, all of which assist physical strength and endurance.