Squier is a surname. Notable people with the surname include:
Billy Squier (born 1950), American rock musician
Carl Browne Squier (1893-1967), American World War I aviation pioneer
Ephraim George Squier (1821-1888), American archaeologist
George Owen Squier (1863-1934), American inventor
Ken Squier (born 1935), American sportscaster and motorsports editor
Mark Squier, American political consultant