Kottenheim () is a municipality in the district of Mayen-Koblenz in Rhineland-Palatinate, western Germany.
The trains of the Cross Eifel Railway are serving Kottenheim by lines RB23 (Limburg - Diez - Bad Ems - Koblenz - Andernach - Mayen) as well as RB38 (Andernach - Mayen - Kaisersesch).