Olesya (Ukrainian and Russian: Олеся), also spelt Olessia or Olesia, is a feminine given name.
It is a Slavonic name that derives from Ukrainian diminutive form of the name Alexandra, and thus acquires the meaning of "protector". The names Alesya and Lesya can be considered variants.
Notable people with the name include:
Olesya Aliyeva (b. 1977), Russian alpine skier
Olesya Babushkina (b. 1989), Belarusian gymnast
Olesya Bakunova (b. 1980), Belarusian sprint canoer
Olesya Barel (b. 1960), Russian basketball player
Olesya Belugina (b. 1984), Russian gymnast
Olesya Chumakova (b. 1981), Russian middle-distance runner
Olesya Dudnik (b. 1974), Ukrainian gymnast and coach
Olesya Forsheva (b. 1979), Russian athlete
Olesya Hudyma (b. 1980), Ukrainian artist, poet and journalist
Olesya Kurochkina (b. 1983), Russian football player
Olesya Mashina (b. 1987), Russian footballer
Olesya Nazarenko (born 1976), amateur wrestler, judoka and sambo player from Turkmenistan
Olesya Nurgalieva (b. 1976), Russian ultramarathon runner
Olesya Povh (b. 1987), Ukrainian sprinter
Olesya Rostovskaya (b. 1975), Russian composer, theremin player, carillonneur, organist, Russian zvon bell-ringer
Olesya Rulin (b. 1986), Russian-American actress
Olesya Vadimovna Sokur (1960–2025), Ukrainian biologist, biochemist
Olesya Stefanko (b. 1988), Ukrainian beauty pageant winner
Olesya Syreva (b. 1983), Russian athlete
Olesya Velichko (b. 1981), Russian modern pentathlete
Olesya Vladykina (b. 1988), Russian Paralympic swimmer
Olesya Zabara (b. 1982), Russian triple jumper
Olesya Zamula (b. 1984), Azerbaijani wrestler
Olesya Zykina (b. 1980), Russian athlete