Putnam
- Country: United States
- State: Connecticut
- Population: 7,214 (2010)
- Latitude: 41° 54.9' N (41.9151°)
- Longitude: 71° 54.5' W (-71.90896°)
- Elevation: 90 m/296 ft. above sea level
- Time zone: America/New_York (UTC -05:00); DST observed (UTC -04:00)
- Alternate names: Putnam CDP, Cargill Falls, Great Falls, Pomfret Street, Pomfretville, Quinebaug, Quinebaug Falls, Wilkinson, Wilkinsonville