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 Cecil Clyde Squier (died 1951), American politician from Maryland Ephraim George Squier (1821–1888), American archaeologist George Owen Squier (1863–1934), American inventor James Wilson Squier (died 1940), American politician and lawyer from Maryland Ken Squier (1935-2023), American sportscaster and motorsports editor Mark Squier, American political consultant J. Bentley Squier, MD, FACS, (1873–1948) was the 16th President of the American College of Surgeons and Urologist-in-Chief at Columbia-Presbyterian Hospital from 1928–1939