Wiesthal is a community in the Main-Spessart district in the Regierungsbezirk of Lower Franconia (Unterfranken) in Bavaria, Germany and a member of the Verwaltungsgemeinschaft (municipal association) of Partenstein.

The small stream, the Aubach, once split the community into two parts, one belonging to the Bishopric of Mainz and the other to the County of Rieneck.

The Electoral Mainz Amt was in Prince Primate von Dalberg's favour secularized and passed with his Principality of Aschaffenburg in 1814 (by this time it had become a department of the Grand Duchy of Frankfurt) to the Kingdom of Bavaria.

According to official statistics, there were 208 workers on the social welfare contribution rolls working in producing businesses in 1998.

The tinctures gules and argent (red and silver) recall this latter state's former hegemony over the whole community once the Counts had died out (and before that over the other half).