A counterweight is a weight that provides balance and stability in a mechanical system.

Counterweight may also refer to:

• "Counterweight" (The Outer Limits), a 1964 television episode
• Counterweight, an organization founded by British author Helen Pluckrose
• Counterweight, an alias of the fictional comics character Jack Power
• Counterweight, an alias of the fictional comics character Katie Power
• Counterweight, a 2021 novel by South Korean author Djuna