Larbalestier (from Old French meaning "the arbalist" or "the arbalister") is an English surname from Devon, where the family held a seat as Lords of the Manor. Notable people with the surname include:

David Larbalestier, American physicist Justine Larbalestier (born 1967), Australian writer Simon Larbalestier (born 1962), Welsh photographer Sir Lewis Hamilton (born 1985), British F1 racing driver and world champion, changed his name in 2022 to incorporate his mother's surname, including 'Larbalestier' as a middle name rather than adding it to his surname.

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