This is the List of rivers in Connecticut (U.S. state), sorted by drainage basin.
All of Connecticut's rivers flow into Long Island Sound. From there, the waters mix into the Atlantic Ocean.
- Pawcatuck River
- Mystic River
- Poquonock River
- Thames River
- Shetucket River
- Little River (Shetucket River)
- Natchaug River
- Fenton River
- Mt. Hope River
- Still River (Natchaug River)
- Quinebaug River
- Blackwell Brook
- Fivemile River (Quinebaug River)
- French River
- Little River (Quinebaug River)
- Moosup River
- Pachaug River
- Willimantic River
- Hop River
- Tenmile River (Willimantic River)
- Yantic River
- Niantic River
- Fourmile River (Connecticut)
- Threemile River (Connecticut)
- Black Hall River
- Connecticut River
- Deep River (Connecticut River)
- Eightmile River (Connecticut River)
- Falls River (Connecticut River)
- Moodus River
- Salmon River
- Blackledge River
- Jeremy River
- Farmington River
- East Branch Farmington River
- Nepaug River
- Pequabu River
- Pequabuck River
- Poland River
- West Branch Farmington River
- Still River (Farmington River)
- Hockanum River
- Mattabesett River
- Park River (also known as Hog River and Little River)
- Podunk River
- Scantic River
- Patchogue River
- Menunketesuck River
- Indian River (Clinton)
- Hammonasset River
- Neck River
- East River (Connecticut)
- West River (Guilford)
- Branford River
- Farm River (Connecticut)
- Quinnipiac River
- Eightmile River (Quinnipiac River)
- Muddy River (Connecticut)
- Tenmile River (Quinnipiac River)
- Mill River
- West River
- Cove River (Connecticut)
- Oyster River (Connecticut)
- Indian River (Milford)
- Wepawaug River
- Housatonic River
- Blackberry River
- Halfway River
- Farmill River
- Hollenbeck River
- Konkapot River
- Naugatuck River
- Mad River (Naugatuck River)
- Ten Mile River, Housatonic
- Pomperaug River
- Nonewaug River
- Weekeepeemee River
- Pootatuck River
- Shepaug River
- Bantam River
- Marshepaug River
- Still River
- West Aspetuck River
- Pequonnock River
- Mill River (Southport)
- Saugatuck River
- Aspetuck River
- Little River (Saugatuck River)
- West Branch Saugatuck River
- Norwalk River
- Fivemile River (Connecticut)
- Noroton River
- Rippowam River
- Mill River (Rippowam River)
- Mianus River
- Byram River
- Hudson River (New York)