Hilarion of Pskov, also known as Hilarion of Gdov and of Lake Gdov, was a fifteenth-century Russian monastic founder and abbot. He was a disciple of Saint Euphrosynus of Pskov, the founder of the Spaso-Eleazarovsky Monastery, under whom he was formed in the ascetic life before establishing a community of his own. He is commemorated on March 28, the day of his repose, and on October 21.
In 1460 Hilarion founded the Ozersk (Lake) Monastery of the Protection of the Mother of God on the banks of the River Zhelcha, not far from Gdov. The site lay on the frontier with the territory of the Livonian Knights, and the monks of the new community constantly suffered the incursions of that military order. Despite harsh conditions and insufficient means, Hilarion is recorded to have maintained a high level of monastic and ascetic life and to have made great efforts to build up and adorn the monastery.
Hilarion reposed on March 28, 1476, and was buried in the church of the Protection of the Most Holy Theotokos within the monastery he had founded. A Church of the Nativity of Christ was later built at the monastery, its left chapel dedicated to the founder. His relics remain preserved at the site, where the Protection church became a parish in 1942 and monastic services resumed in 1993.