Lines is an English surname. Notable people with the surname include:
- Aaran Lines (born 1976), New Zealand association football player
- Aaron Lines (born 1977), Canadian country musician
- Andy Lines (born 1960), British Anglican bishop
- Edwin Stevens Lines (1845–1927), Bishop of the Episcopal Diocese of Newark, New Jersey
- Mary Lines (1893–1978), British athlete
- Jonathan Lines, American politician
- Oliver Lines (born 1995), English snooker player
- Peter Lines (born 1969), English snooker player, father of Oliver
- Roland Walter Lines (1877–1916), architect
- Sue Lines (born 1953), Australian politician
- Stanley Lines, Bermudian Olympic sprinter
- Stewart Lines (born 1963), British racing driver