Langdale is a surname, possibly taken from place names meaning "long valley", such as Great and Little Langdale. Notable people with the name include:
Alban Langdale or Langdaile (1532–1580), English Roman Catholic churchman Baron Langdale, a title used in the British peerage Charles Langdale, formerly Stourton (1787–1868), British politician Doug Langdale (born 1969), American screenwriter etc. George Langdale (1916–2002), English cricketer and schoolmaster Jane A. Langdale (born 1960), British botanist and academic Mark Langdale (born 1954), American businessman and ambassador Pascal Langdale (born Pascal Langlois), English actor Stella Langdale (1880–1976), English and Canadian artist