Sidney Smith may refer to:
- Sir William Sidney Smith (1764–1840), British admiral, always known as Sir Sidney Smith
- Sidney Smith (lawyer) (1823–1889), lawyer and politician in Upper Canada
- Sidney Irving Smith (1843–1926), American zoologist
- Sidney Smith (cartoonist) (1877–1935), American cartoonist
- Sidney Smith (American football), American college football coach in 1905
- Sidney Earle Smith (1897–1959), Canadian university president and Secretary of State for External Affairs
- Sidney Walter Smith (1893–1981), New Zealand politician
- Sidney Oslin Smith Jr. (1923–2012), United States federal judge
- Sidney R. J. Smith, (1858–1913) architect - designer of many of the buildings funded by Henry Tate's philanthropy
- Sidney Smith (photographer), fl. first half of the 20th century; English photographer, see Beck Isle Museum, Pickering
- Sidney Smith (snooker player), see 1938 World Snooker Championship
Famous quotes containing the words sidney and/or smith:
“She never dies, but lasteth
In life of lover’s heart;
He ever dies that wasteth
In love his chiefest part.”
—Sir Philip Sidney (1554–1586)
“There are people who, like houses, are beautiful in dilapidation.”
—Logan Pearsall Smith (1865–1946)