Growler may refer to:

• Growler (electrical device), for testing electric motors
• Growler (calypsonian), pseudonym of singer Errol Duke
• EA-18 Growler, a jet fighter
• USS Growler, any of four ships

Growler may also be:

• A size of iceberg
• A type of beer bottle
• A house robot in the television show Robot Wars
• A species from the fictional Honorverse universe
• A species from the fictional VOR: The Maelstrom universe