Sowerby is a surname. Notable people with the surname include:
Sowerby family, naturalists and artists
Sowerby family, a British family of naturalists and artists
Arthur de Carle Sowerby (1885–1954), British explorer in China
Charlotte Caroline Sowerby (1820–1865), British natural history illustrator
George Brettingham Sowerby I (1788–1854), British malacologist
George Brettingham Sowerby II (1812–1884), British malacologist
George Brettingham Sowerby III (1843–1921), British malacologist
James Sowerby (1757–1822), British zoologist and painter
James Sowerby (1815–1834), British mycologist
James de Carle Sowerby (1787–1871), English scientist and artist
John Edward Sowerby (1825–1870), artist and publisher
Others
Artists
John George Sowerby (1850–1914), English painter and illustrator
Millicent Sowerby (1878–1967), English painter and illustrator
Politicians
John Sowerby (MP) (fl. 1391–1411), English lawyer and Member of Parliament
William Sowerby (politician) (born 1956), American politician
Other occupations
E. Millicent Sowerby (1883–1977), English bibliographer
Francis Sowerby Macaulay, British mathematician
Fred Sowerby (born 1948), Antigua and Barbuda sprinter
Githa Sowerby (1876–1970), English playwright
Leo Sowerby (1895–1968), twentieth-century American composer
William Sowerby (clergyman) (1799–1875), English clergyman
Fictional characters
From The Secret Garden by Frances Hodgson Burnett
Dickon Sowerby, a main character with knowledge about nature
Martha Sowerby, a servant at the house and Mary's maid
Mrs Sowerby, Dickon and Martha's mother.