Gravamen (from Lat. gravare, to weigh down; gravis, heavy), a complaint or grievance, the ground of a legal action, and particularly the more serious part of a charge against an accused person.

In English the term is used chiefly in ecclesiastical cases, being the technical designation of a memorial presented from the Lower to the Upper House of Convocation , setting forth grievances to be redressed, or calling attention to breaches in church discipline.