| William Peter Pilgeram | |
| Birth Date: | 11 March 1890 |
| Birth Place: | Great Falls, Montana, U.S. |
| Office: | Member of the Montana House of Representatives |
| Term Start: | ??? |
| Term End: | ??? |
| Office1: | Speaker of the Montana House of Representatives |
| Term1: | 1935[1] |
| Office2: | 15th Lieutenant Governor of Montana |
| Governor2: | Elmer Holt |
| Term Start2: | December 16, 1935 |
| Term End2: | January 4, 1937 |
| Preceded2: | Elmer Holt |
| Succeeded2: | Hugh R. Adair |
| Party: | Democratic |
William Peter Pilgeram (March 11, 1890 – April 7, 1972), also known as W. P. Pilgeram and Bill Pilgeram, was an American politician. He served as lieutenant governor of Montana from 1935 to 1937.
Pilgeram was born in Great Falls, Montana. He was a sergeant in the United States Marine Corps during World War I.[2]
In 1935, Pilgeram was elected to the Montana lieutenant governorship, succeeding Elmer Holt. He served until 1937, when he was succeeded by Hugh R. Adair.
Pilgeram died[3] in April 1972, at the age of 82.