Top hat (disambiguation)

Top hat, Top Hat, Tophat or Top-hat may refer to:

Fashion, clothing, and decoration

• A top hat is a tall hat worn primarily in the 19th and early 20th century.

Cinema, theater, and entertainment

• 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 (TUGS), a recurring character in the children's television series TUGS
• Top Hat, a character from the 1999 TV series The Tribe
• Top hat (lighting), a theatrical lighting device

Governmental cryptonyms

• TOPHAT, cryptonym of Dmitri Polyakov (1921–1988), a Soviet general and a spy for the CIA
• Operation Top Hat, a "local field exercise" conducted by the United States Army Chemical Corps in 1953

Mathematical analysis

• 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

Science and advanced technology

• Tophat beam, a type of laser beam
• TopHat (telescope), a balloon-borne experiment to measure the cosmic microwave background
• Top hat, capacitance hat, (capacitive) top loading, an electrical antenna design technique used to improve the performance of an antenna that is too short for the operating wavelength

Engineering, manufacturing, and construction

• Top hat, an alternate name for a steel batten
• Top hat (roller coaster element)
• Top Hat 25 (and later model Top Hat 27), an Australian-made sailing yacht
• Top Hat, in automotive design, differing upper bodies sharing a common platform

Distinct from

• Tophet