Gaudete Sunday (/ɡaʊˈdɛtɛ/ gow-DET-eh) is the third Sunday of Advent in the liturgical calendar of the Western Church, including the Roman Catholic Church, the Anglican Communion, Lutheran Churches, and other mainline Protestant churches. It can fall on any date from 11 December to 17 December.

The day takes its common name from the Latin word Gaudete ("Rejoice"), the first word of the introit of this day's Mass:[1]

Gaudete in Domino semper: iterum dico, gaudete. Modestia vestra nota sit omnibus hominibus: Dominus enim prope est. Nihil solliciti sitis: sed in omni oratione et obsecratione cum gratiarum actione petitiones vestræ innotescant apud Deum. Benedixisti Domine terram tuam: avertisti captivitatem Jacob.

This may be translated as: "Rejoice in the Lord always; again I say, rejoice. Let your forbearance be known to all, for the Lord is near at hand; have no anxiety about anything, but in all things, by prayer and supplication, with thanksgiving, let your requests be known to God. Lord, you have blessed your land; you have turned away the captivity of Jacob." Philippians 4:4–6; Psalm 85 (84):1