Swainson is a family name of English origin. It may refer to:

People

• Charles Swainson (naturalist), (1841-1913), Rector of High Hurst Wood and later of Old Charlton, author of books on birds, weather and folk-lore
• Charles Anthony Swainson (1820–1887), English theologian
• Gina Swainson (born 1958), Bermudan first runner-up in the 1979 Miss Universe contest
• Isaac Swainson (1746–1812), English patent medicine entrepreneur
• John Swainson (1925–1994), American politician
• William John Swainson (1789–1855), English naturalist
• William Swainson (lawyer) (1809–1884), English lawyer

Places

• The Swainson Island Group, which includes Swainson Island, Tasmania, Australia

Biology

Birds

• Swainson's flycatcher, Myiarchus swainsoni
• Swainson's francolin, or Francolinus swainsonii
• Swainson's hawk, Buteo swainsoni
• Swainson's sparrow, Passer swainsonii
• Swainson's thrush, Catharus ustulatus
• Swainson's warbler, Limnothlypis swainsonii

Butterflies

• Swainson's crow, Euploea swainson

Plants

• Swainsona, large genus of flowering plants native to Australia

This disambiguation page lists articles associated with the title Swainson.
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