Rothenbuch is a community in the Aschaffenburg district in the Regierungsbezirk of Lower Franconia (Unterfranken) in Bavaria, Germany.

Rothenbuch lies in the region Bayerischer Untermain (Bavarian Lower Main), in Germany's largest consecutive broadleaf woodland, the Spessart.

In 1318, Rothenbuch had its first documentary mention in the words zuo den Rodenboychen when the Archbishop of Mainz, Peter of Aspelt and the Bishop of Würzburg, Gottfried III of Hohenlohe, concluded an agreement here dealing with cooperation on security questions.

According to official statistics, there were 47 workers on the social welfare contribution rolls working in agriculture and forestry in 1998.

Five businesses were in construction (2 in the industry itself and 3 others in related fields), and furthermore, there are 2 agricultural operations with a meadowland area of 157 ha.

Found today on the site is a former hunting castle that was built to Daniel Brendel von Homburg's plans in 1567.

The four-winged complex features a rectangular inner courtyard with a polygonal stair tower in the north wing.

The castle served as a central administrative seat in the Spessart and was for more than two centuries the lawcourt for 14 surrounding communities.

Since 2017 the castle no longer a hotel, but is used by the French company Châteauform' as an event venue for business meetings, corporate retreats and conferences.