In a generic sense, a replicator can be anything capable of self-replication. It may refer to:

• Artificial life
• Assembler (nanotechnology)
• Virus
• Clanking replicator
• Computer virus
• DNA replication
• Meme
• Nanotechnology
• Rapid prototyping

Replicator may also refer to:

• Replicator (Stargate), a fictional species in the series Stargate SG-1
• Replicator (Star Trek), a fictional technology in the Star Trek universe
• Replicator (band), a noise rock band from Oakland, California