Eastick is a surname. Notable people with the surname include:
Bill Eastick (1888–1914), Australian rules footballer Brian Eastick (born 1951), English footballer and coach Bruce Eastick (1927–2025), South Australian politician Charles Eastick (1860–1947), British chemist John Joseph Eastick (1855–1917), British chemist Tom Eastick (1900–1988), Australian army officer
See also Eastwick (disambiguation)