Olesko Castle (Ukrainian: Олеський замок, Polish: Zamek w Olesku) is located within the borders of present-day Zolochiv Raion in Ukraine.

The first historical records of the castle are in a document dated 1390, when Pope Boniface IX gave Olesko and Tustan to a Catholic bishop of Halych.

[1] Olesko Castle, oval in shape, stands on top of a small hill, about fifty meters in height.

In 1605, the castle was bought by the nobleman Jan Daniłowicz h. Sas, a wealthy local landowner and Voivode of the Ruthenian Voivodeship.

It also features sculptures, paintings, still lives, applied arts, tapestries, period weapons, and objects used in everyday life at the time.

On June 9, 2017, the national postal operator Ukrposhta put into circulation a postage stamp "Olesky Castle of the XIII-XVIII centuries" with a face value of UAH 5.80.

program, represented Ukraine in the annual postage stamp rating conducted by the association of European postal operators PostEurop.