The following is a list of estuaries of Wales. Wales's many estuaries are generally named for the principal river which enters the sea through them.^[1] Those indicated thus * are listed at this reference.^[2]

• Afan estuary*
• Alaw estuary*
• Artro estuary*
• Cefni estuary*
• Conwy estuary
• Daugleddau estuary
• Dee estuary*
• Dwyryd estuary (known as Traeth Bach)
• Dyfi estuary*
• Dysynni estuary*
• Ebbw estuary
• Foryd Bay* (estuary of the Gwyrfai and Carrog rivers)
• Glaslyn estuary or Traeth Bach*
• Gwendraeth estuary
• Lavan Sands (not strictly an estuary but included in the NCC list of estuaries)
• Loughor estuary* (a.k.a. Burry Inlet)
• Mawddach estuary
• Neath estuary
• Nyfer (or Nevern) estuary*^[3]
• Ogmore estuary*
• Pwllheli Harbour* (estuary of the rivers Erch and Rhyd-hir)
• Rhymney estuary
• Severn Estuary*
• Taf estuary
• Tawe estuary
• Teifi estuary*
• Thaw estuary
• Traeth-coch
• Traeth Dulas
• Traeth melynog*
• Tywi estuary
• Usk estuary
• Wye estuary