In Slavonic tradition, Saint Barlaam is commemorated during the Proskomedia with the venerable and God-bearing Fathers who excelled in asceticism, receiving the sixth particle.

He is also commemorated on November 6 and February 10.

Troparion — Tone 3

Exhausting your body by sleeping on the earth, praying, and keeping vigil, O Venerable one, / you dispelled all carnal thoughts / and become a copious stream of healing for those who come to you with faith; / O Barlaam, our Father, / pray to Christ God for the salvation of our souls.

Kontakion — Tone 8

As a second Elijah, O Father, you brought down rain from the heavens, / for he brought down fire and astonished the king, / but you pleased your people and instituted a festival. / Great Novgorod takes pride in you, having your relics in itself, / preserving it unshaken by enemies, so that we may cry out to you: / “Rejoice, Venerable Barlaam, our Father.”