Lancaster har flere betydninger:
Lancaster (slægt) – Huset Lancaster, en engelsk slægt Avro Lancaster – Engelsk bombefly fra 2. verdenskrig Burt Lancaster – Amerikansk skuespiller
Steder
Australien Lancaster, Victoria
Canada Lancaster, New Brunswick Lancaster, Ontario Lancaster Sound, i Nunavut
England Lancaster, Lancashire – by i England Lancaster University Hertugdømmet Lancaster – en kongelig besiddelse i England
USA Lancaster, Californien – by i Californien Lancaster, Illinois Lancaster, Huntington County, Indiana Lancaster, Jefferson County, Indiana Lancaster, Kansas Lancaster, Kentucky Lancaster, Massachusetts Lancaster, Minnesota Lancaster, Missouri Lancaster, New Hampshire Lancaster, New York (by) Lancaster, Ohio Lancaster, Oregon Lancaster, Pennsylvania Lancaster, South Carolina Lancaster, Texas Lancaster, Virginia Lancaster, Wisconsin Lancaster Junction, Wisconsin Lancaster County, Nebraska Lancaster County, Pennsylvania Lancaster County, South Carolina Lancaster County, Virginia