Eschau is a market community in the Miltenberg district in the Regierungsbezirk of Lower Franconia (Unterfranken) in Bavaria, Germany.

The community has the five Gemarkungen (traditional rural cadastral areas): Eschau, Hobbach, Oberaulenbach, Sommerau and Wildensee.

Eschau borders on (clockwise from the north): Heimbuchenthal, Dammbach, Altenbuch, Stadtprozelten, Dorfprozelten, Collenberg, Mönchberg and Elsenfeld.

Eschau was an Amt of the Lordship of Wildenstein held by the Counts of Erbach and mediatized by Prince Primate von Dalberg (Principality of Aschaffenburg/Grand Duchy of Frankfurt) in 1806, which in 1814 passed to Austria, and shortly thereafter to the Kingdom of Bavaria.

According to official statistics, there were 8 workers on the social welfare contribution rolls working in agriculture and forestry in 1998.

Also nearby, but located just outside the municipal territory, is the plateau of Geishöhe, one of the few Spessart hills whose peak is not densely wooded and thus offers a panoramic view.