Lancaster is a surname. People with the surname include:
Alan Lancaster, bass guitar player
Amber Lancaster, American actress/model
Benjamin Lancaster (1801-1887), British pharmacist
Bill Lancaster (aviator), British aviator
Bill Lancaster (1947-1997), American screenwriter
Brett Lancaster, professional cyclist
Burt Lancaster (1913-1994), American actor
Callum Lancaster, English rugby league footballer
Charles D. Lancaster, Jr., Louisiana politician
Don Lancaster
Edgar H. Lancaster, Jr., Louisiana politician
Elsa Lanchester, British character actress
Geoffrey Lancaster
Harry Lancaster, American basketball and baseball coach
James Lancaster
John L. Lancaster
Joseph Lancaster (1778–1838), English Quaker and public education innovator
Kelvin Lancaster
Kerry Lancaster
Les Lancaster
Mark Lancaster
Marshall Lancaster, actor
Martin Lancaster
Nancy Lancaster
Osbert Lancaster (1908–1986), English cartoonist, author, art critic and stage designer
Penny Lancaster
Robert S. Lancaster, American skeptic
Ron Lancaster, football player, coach and general manager in the CFL
Roy Lancaster, UK TV gardener, author and plant hunter
Sarah Lancaster
Spear Lancaster
William Lancaster, pseudonym for John Byrne Leicester Warren, 3rd Baron De Tabley, poet and author
William Lancaster (cricketer)
William de Lancaster I