Tisdall is a surname. Notable people with the surname include:
Arthur Walderne St. Clair Tisdall (1890–1915), British recipient of the Victoria CrossBob Tisdall (1907–2004), Irish Olympic athleteCharles Edward Tisdall (1866–1936), Canadian mayor of VancouverE.E.P. Tisdall (born 1907), British biographerFrederick Tisdall (1893–1949), Canadian pediatricianJonathan Tisdall (born 1958), chess grandmasterMargaret Tisdall (1905–1979), Irish singer and pianist known by stage name Peggy DellSarah Tisdall (born 1960), British Foreign Office clerk jailed for leaking documentsWilliam Tisdale (born c. 1570), also spelled Tisdall, English musician and composerWilliam St. Clair Tisdall (1859–1928), British historian and philologist