Karl Meyer
Karl Meyer may refer to:
- Karl Meyer , American pacifist, activist, Catholic worker and tax resister
- Karl Meyer , World War I flying ace
- Karl Meyer , German biochemist
- Karl Meyer , Norwegian businessman, stockbroker and fascist
- Karl E. Meyer, American journalist
- Karl Friedrich Meyer, Swiss-born American pathologist
- Karl Meyer-class seaplane tender, a Second World War-era ship
- Karl Meyer , Swiss national team footballer