Alexander Nikolayevich Ostrovsky (12 April [O.S. 31 March] 1823 – 14 June [O.S. 2 June] 1886) was a Russian playwright, generally considered the greatest representative of the Russian realistic period. The author of 47 original plays, Ostrovsky "almost single-handedly created a Russian national repertoire". His dramas are among the most widely read and frequently performed stage pieces in Russia.

Александр Николаевич Островский (31 марта [12 апреля] 1823 — 2 [14] июня 1886) — русский драматург, творчество которого стало важнейшим этапом развития русского национального театра.