Waltenhofen is a municipality in the district of Oberallgäu in Bavaria in Germany. On 1 January 1972, the previously independent municipality of Memhölz was incorporated into Waltenhofen. On January 1 1976, Niedersonthofen was added, and on April 1, 1976 Martin im Allgäu was also added. The mayor has been Eckhard Harscher since 2006.