Broster is a surname. Notable people with this surname include:
Ben Broster (born 1982), English rugby union footballer D. K. Broster (1877–1950), English novelist and short-story writer John Broster (born 1945), American archaeologist John Broster (footballer) (1889–1959), English footballer Lennox Broster (1889–1965), South Africa-born surgeon Paul Broster (born 1973), Australian cricketer Tom Broster (1878–1942), Cape Colony cricketer
See also Broster, Broster!, 1970s Swedish TV series (a combination of bror and syster)