Gau-Odernheim is a municipality located in the Alzey-Worms district within the state of Rhineland-Palatinate, Germany. It is classified as an Ortsgemeinde, which is a type of local municipality that belongs to a Verbandsgemeinde, or collective municipality.
The town serves as a local administrative unit within its respective district. Its primary geographical and political identification is defined by its membership in the Rhineland-Palatinate region.