- Source: Sayn (disambiguation)
Sayn was a small German county of the Holy Roman Empire which, during the Middle Ages, existed within what is today Rheinland-Pfalz in Germany.
Sayn may also refer to:
Sayn, village in the borough of Bendorf in the county of Mayen-Koblenz, Rhineland-Palatinate, Germany
Sayn Castle in Sayn
Sayn (river), a right tributary of the River Rhine
Sayn-Wittgenstein, German noble family
Sayn-Wittgenstein-Sayn, branch of the German noble family