Langdon township
- County:
- Cavalier County
- County Seat:
- No
- Area (mi²):
- 35.956
- State:
- North Dakota
Langdon township is located in Cavalier County, North Dakota. Langdon township has a 2026 population of 36. Langdon township is currently declining at a rate of -5.26% annually but its population has increased by 2.86% since the most recent census, which recorded a population of 35 in 2020.