Onslaught can also refer to:

• Onslaught (comics), a Marvel Comics supervillain.
• Onslaught (Magic: The Gathering), an expansion to the Magic: The Gathering collectible card game.
• Onslaught (video game), a 1989 Amiga platform beat'em up computer game.
• Onslaught (band), a British thrash metal band.
• Onslaught (novel), a 2002 science fiction novel by David Sherman and Dan Cragg.
• Onslaught (Transformers) is the leader of the Combaticons, a Decepticon team in the Transformers series.
• A gametype in the first-person shooter computer game Unreal Tournament 2004 and in Nexuiz.
• Onslaught (Pesticide), a general use pesticide.
• A popular online flash game in the genre of tower defense.