Ostrovsky, Ostrovskiy, Ostrovskyi[a] (masculine), Ostrovskaya or Ostrovska[b] (feminine) are variations of a Slavic surname. Notable people with the surname include:
It is based on the Slavic word for "island"
- Belarussian: востраў (vostraw)
- Russian: остров (ostrov)
- Ukrainian: острів (ostriv)
- Alexander Ostrovsky (1823–1886), Russian dramatist
- Alexey Ostrovsky (born 1976), Russian politician
- Anton Ostrovsky (born 1982), Israeli actor and rap singer
- Arkady Ostrovsky (1914–1967), Soviet composer
- Baruch Ostrovsky (1890–1960), first mayor of Ra'anana, Israel
- Erika Ostrovsky (1926–2010), Austrian-American biographer of Louis-Ferdinand Céline
- Grigory Ostrovsky (1756–1814), Russian portrait painter
- Iossif Ostrovskii (1934–2020), Ukrainian mathematician
- Josh Ostrovsky (born 1982), American entrepreneur, social media personality
- Leonid Ostrovsky (1936-2001), Soviet football star
- Leonard Ostrovsky (1922–1973), US politician in Ohio
- Mikhail Nikolayevich Ostrovsky (1827–1901), Russian statesman
- Mikhail Ostrovsky (diplomat) [ru], commissar and Soviet minister to Bucharest, victim of Stalin's purges
- Nikolai Ostrovsky (1904–1936), Russian Soviet writer, author of the novel How the Steel Was Tempered
- Rafail Ostrovsky (born 1963), professor of computer science and mathematics at UCLA
- Sasha Ostrovsky member of Russian country music band Bering Strait
- Simon Ostrovsky (born 1981), Soviet-born Jewish American journalist, director, and producer of documentaries
- Sofiya Ostrovska (born 1958), Ukrainian mathematician
- Victor Ostrovsky (born 1949), Canadian-born, Israel-raised self-proclaimed former Mossad officer and author of several books
- Vivian Ostrovsky (born 1945), experimental filmmaker
Fictional characters
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