| Walther C. Boetcher | |
| Office: | 32nd Mayor of Indianapolis |
| Term Start: | 1937 |
| Term End: | 1939 |
| Predecessor: | John W. Kern, Jr. |
| Birth Date: | 13 November 1881 |
| Party: | Democrat |
Walter C. Boetcher (November 13, 1881 – October 5, 1951) was an American politician who served as the 32nd mayor of the city of Indianapolis, Indiana. He served as mayor from 1937 to 1939. He was a member of the Democratic Party. Boetcher is buried at Crown Hill Cemetery in Indianapolis.