Fritz was originally a German nickname for Friedrich, or Frederick (der alte Fritz, a nickname for King Frederick II of Prussia). Common derivations include the surnames Fritsche, Fritche, and Fritsh. Fritz was a pejorative nickname given to Germans during World War II.

Fritz may also refer to:

• Fritz (chess), a German computer chess program
• Fritz-chip, secure cryptoprocessor of the Trusted Computing Group
• Fritz the Cat, cartoon character
• Fritz the Cat, animated film
• The Nine Lives of Fritz the Cat, sequel to Fritz the Cat
• Fritz (band) (1968-1972), featuring Stevie Nicks and Lindsey Buckingham
• Fritz a Type of Sausage, Similar to Bologna.
• Chester Fritz Library and the Chester Fritz Auditorium, facilities on the University of North Dakota campus in Grand Forks, North Dakota
• "On the fritz" refers to something (specifically an appliance) broken or malfunctioning, perhaps onomatopoeia for the noise of electric sparks jumping.
• a nickname of the Personnel Armor System for Ground Troops Helmet kevlar helmet currently used by the US Military.
• Character in Frankenstein played by Dwight Frye. Frye's definitive portrayal of a mad scientist's hunchbacked assistant became confused with Bela Lugosi's non-related Ygor in Son of Frankenstein, resulting in the latter name becoming associated with this horror-movie staple.

German loanwords | Fritz | Fritz | Fritz