Llanstadwell is a small village in south Pembrokeshire, Wales. The village is set along the River Cleddau.
The village has its own community council and is part of the Neyland West Electoral ward of Pembrokeshire county council.
In 2009 Llanstadwell made news when a house in the village was found by Dyfed-Powys Police to have three rooms being used to grow and dry cannabis. a large amount of money was also found. Initially a local officer of the Milford Haven rural neighbourhood policing team, Police Community Support Officer (PCSO) Jade Miller was on routine patrol in Llanstadwell when she came across the house smelling strongly of the cannabis. A warrant was obtained and the house was then searched.