M Douglas Harpool
- Category : 1956-births
- Type : MGP
- Profile : 1/3 - Investigating / Martyr
- Definition : Single
- Incarnation Cross : RAX Rulership 2
United States District Judge of the United States District Court for the Western District of Missouri. He also has been a Democratic American politician, and a former member of the Missouri House of Representatives from southwest Missouri's 134th district. He served five terms from 5 January 1983 to 6 January 1993.