in geography, a town of the electorate of Cologn, in Germany, situated on the western shore of the river Rhine, about 12 miles south of Cologn; in 7° E. long. and 50° 35' N. lat. It is a small but well fortified town, and has a fine palace, which the elector of Cologn makes his usual residence.

Bon is also the name of one of the Molucca islands, lying west of Coram.