Zaleski (feminine Zaleska, plural Zalescy) is a Polish surname. At the beginning of the 1990s there were approximately 4322 people in Poland with this surname.^[1] Notable people with the surname include:

• Alexander M. Zaleski (1906–1975), U.S. Catholic Bishop
• Anthony Florian Zaleski (1913–1997), American two-time world middleweight boxing champion
• August Zaleski (1883–1972), Polish diplomat, historian, President of Poland in Exile
• Bronisław Zaleski (1819 or 1820–1880), Polish writer
• Carol Zaleski, American author, professor of religious studies
• Jan Zaleski (1869–1932), Polish biochemist
• Jan Zaleski (philologist) [pl] (1926–1981), Polish philologist, historian of language, numismatist
• Jerod Zaleski (born 1989), Canadian football player
• Józef Bohdan Zaleski (1802–1886), Polish poet
• Krzysztof Zaleski (1948–2008), Polish actor
• Ladislaus Michael Zaleski (1852–1925), Polish prelate, Apostolic Delegate to the East-Indies and Latin Patriarch of Antioch, botanist
• Leon Zaleski (c. 1810–1841), Polish patriotic activist
• Marcin Zaleski (1796–1877), Polish painter
• Michał Zaleski (born 1952), Polish politician
• Philip Zaleski, American writer and editor
• Terence M. Zaleski (born 1953), American politician
• Wacław Michał Zaleski (pseudonym Wacław from Olesko; 1799–1849), Polish poet, researcher of folklore
• Wojciech Zaleski (1906–1961), Polish politician
• Zbigniew Zaleski (1947–2019), Polish politician
• Zygmunt Zaleski (1882–1967), Polish literature historian, poet