Oblonsky (masculine), Oblonskaya (feminine) is a Russian-language surname (see "Blonsky" for its etymology). Notable people with this surname include:

(1924-2010), Russian writer Shane Oblonsky (born 1985), American kickboxer Prince Stepan (Stiva) Oblonsky, a character from Anna Karenina Prince Serge Oblonsky, a character from The Chess Player (1938 film)

See also Mirosław Obłoński Obolonsky