Biggar is a surname. Notable people with the surname include:
Alastair Biggar (1946–2016), Scottish international rugby union playerAlexander Biggar (disambiguation), multiple peopleAnn-Maree Biggar (active from 1989), Australian television presenterBilly Biggar (1874–1935), English footballerDan Biggar (born 1989), Welsh international rugby union playerHenry Percival Biggar (1872–1938), Canadian historian of New FranceHerbert Biggar (1809–92), merchant, farmer and political figure in Canada WestJames Lyons Biggar (1824–79), Ontario merchant and political figureJames Lyons Biggar (general) (1856–1922), Canadian soldierJohn Walter Scott Biggar (1843–97), Ontario farmer and political figureJoseph Biggar (Joe or J. G. Biggar, 1828–90), Irish politicianMurray Biggar, Canadian politician, mayor of Sudbury, Ontario in 1895Oliver Mowat Biggar (1876–1948), Canadian lawyer and civil servantPaula Biggar (active from 2007), Canadian politicianRobert Biggar (1761–1836), Ontario pioneer from Scotland who settled near BrantfordSanford Dennis Biggar, mayor of Hamilton, Ontario 1905–06William Hodgins Biggar (1852–1922), Ontario lawyer and political figure