Belt is a surname, and may refer to:
Bradley Belt, American businessman
Brandon Belt (born 1988), American baseball player
Christopher Belt, American politician from Illinois
Clarence Belt (1890–1969), American racing driver
David Belt (born 1967), American entrepreneur
Dustin Belt (born 1987), American musician, producer and actor
Elmer Belt (1893–1980), American urologist
Francis Walter Belt (1862–1938), Australian naval commander, lawyer and explorer
George Belt (1865–1930), British politician
George Gordon Belt (1825–1869), American Confederate sympathizer who organized the Mason Henry Gang in California
Harry H. Belt (1883–1950), American educator, lawyer and judge from Oregon
Megan Belt (born 1997), English cricketer
Peter Belt (1930–2017), British hi-fi inventor
Philip Belt (1927–2015), American piano builder
Silvester Belt (born 1997), Lithuanian singer and songwriter
Thomas Belt (1832–1878), English geologist and naturalist
William Belt (1826–1892), English barrister and antiquarian