A top hat is a tall hat worn primarily in the 19th and early 20th century.
Top hat, Top Hat, Tophat or Top-hat may also refer to:
- Top Hat, a 1935 film starring Fred Astaire and Ginger Rogers
- Top Hat (musical), a 2011 stage musical adapted from the 1935 film
- Top hat (lighting), a theatrical lighting device
- Top hat (roller coaster element)
- TopHat (telescope), a balloon-borne experiment to measure the cosmic microwave background
- Top Hat (TUGS), a recurring character in the children's television series TUGS
- Top Hat 25 (and later model Top Hat 27), an Australian-made sailing yacht
- Top-hat filter, a signal filtering technique
- Top-hat transform, an operator from mathematical morphology and digital image processing
- TopHat (bioinformatics), a bioinformatic sequence analysis package tool
- TOPHAT, cryptonym of Dmitri Polyakov (1921–1988), a Soviet general and a spy for the CIA
- Tophat beam, a kind of laser beam
- Operation Top Hat, a "local field exercise" conducted by the United States Army Chemical Corps in 1953
- Top hat, another name for a steel batten
- Top Hat, in automotive design, differing upper bodies sharing a common platform
- Top hat, a network of wires at the top of a mast radiator
- Top Hat, a character from The Tribe
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This disambiguation page lists articles associated with the title Top hat.
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