Rotenhain is an Ortsgemeinde, or community, located in the Westerwaldkreis district within the state of Rhineland-Palatinate, Germany. It functions as a member of a Verbandsgemeinde, which is a type of collective municipality.
Since 1972, Rotenhain has belonged to the Verbandsgemeinde of Westerburg. The administrative seat for this collective municipality is situated in the town of Westerburg.