Look up fats in Wiktionary, the free dictionary.

Fats or FATS may refer to:

• More than one type of fat, one of the three main macronutrients, along with carbohydrate and protein

People with the nickname "Fats"

• Harmonica Fats (1927–2000), American blues harmonica player who was active in the 1950s through to the 1990s
• Hollywood Fats (1954–1986), American blues guitarist, active in Los Angeles, California
• Fats Dantonio (1918–1993), American Major League Baseball catcher
• Alex Delvecchio (born 1931), Canadian hockey player
• Fats Domino (1928–2017), American rock and roll singer and pianist
• Fats Everett (1915–1969), American politician
• Peter Fatialofa (1959–2013), Samoan rugby player
• Bob Fothergill (1897–1938), American Major League Baseball player
• Fats Heard (1923–1987), American jazz drummer
• Fats Jenkins (1898–1968), American Negro leagues baseball and barnstorming basketball player
• Frank Kalin (1917–1975), American Major League Baseball outfielder
• Fats Kaplin, American fiddler
• Anthony Lacen (1950–2004), American jazz tuba player and band leader nicknamed "Tuba Fats"
• J. D. Lawrence (1903–1971), American college football player
• Fats Navarro (1923–1950), American jazz trumpeter
• Fats Pichon (1906–1967), American jazz pianist and singer
• Alvin Roth (basketball), American basketball player
• Fats Sadi (1927–2009), Belgian jazz musician
• Fats Waller (1904–1943), American jazz pianist
• Rudolf Wanderone (1913–1996), American billiards player

Other uses

• Fish acute toxicity syndrome, responses in fish resulting from a short-term, acute exposure to a lethal concentration of a toxicant
• Foreign affiliate trade statistics, data detailing the economic operations of foreign direct investment-based enterprises

• Minnesota Fats, a fictional character in the novels The Hustler and The Color of Money and the film adaptation of the former