John Lancaster

John Lancaster may refer to:


 * John de Lancaster (MP), Member of Parliament (MP) for Lancashire in 1316
 * John Lancaster (died 1424), MP for Suffolk and Norfolk
 * John Lancaster (died 1434), MP for Cumberland and Westmorland
 * John Lancaster (bishop) (died 1619), 17th-century Anglican Bishop of Waterford and Lismore in Ireland
 * John Lancaster (MP) (1816–1884), MP for Wigan
 * John Lancaster (writer) (born 1946), British poet and writer
 * John L. Lancaster, President of the Texas and Pacific Railroad during the first half of the 20th century
 * John Lancaster (Royal Navy officer) (1903–1992)