South West Wales is a region of Wales. A definition consisting of the unitary authorities of Swansea, Neath Port Talbot, Pembrokeshire and Carmarthenshire is used by a number of government agencies and private organisations including:

• BBC
• Welsh Assembly Government
• South West Wales Economic Forum (SWWEF)
• South West Wales Integrated Transport Consortium (SWWITCH)
• South West Wales Tourism Partnership (SWWTP)
• West Wales Chamber of Commerce (WWCC)