Tumbler may refer to:
Tumbler (comics), a Marvel Comics character Tumbler (firearms), a part of the firing mechanism in older firearms Tumbler (glass), a type of glassware Tumbler (pigeon), a pigeon breed Tumbler (Project Xanadu), a unique identifier of a unit of text or an embedded link Tumbler, a machine for tumble polishing solid material Tumbler, a participant in tumbling Tumbler, part of a lock Tumbler, an obsolete name for a porpoise Tumbler, a character in Bob the Builder "Tumbler (Hot & Cold)", a song by Candy Shop from Girls Don't Cry The tumbler, a British culinary measurement unit The Tumbler, a 1968 album by John Martyn The Tumbler (Batmobile), a prototype military vehicle used by Batman in The Dark Knight Trilogy Compost tumbler, a tumbler for composting Cryptocurrency tumbler, a service to mix and anonymize cryptocurrency Tumbler toy or roly-poly toy, a type of toy that can tumble over and then straighten up by itself
See also Tumble dryer, for drying clothes Tumblr, an internet microblogging and social networking platform List of tumblers (small Solar System bodies)