Gründau () is a municipality in the district Main-Kinzig, in Hesse, Germany.
Gründau is located near Gelnhausen and Büdingen. Frankfurt am Main, the largest city in Hesse, is located in a distance of about .
Gründau is a municipality that consists of seven villages, with a population of 14,653 in total (populations as of December 2021):
Most of the villages are mentioned in church registers since the 11th century.