Milford Haven Refinery was an oil refinery situated on the Pembrokeshire coast in Wales, United Kingdom. The refinery began operating in 1973 under Amoco's ownership, but in its final years it was owned by Murco Petroleum. The closure of the refinery was announced in November 2014. The site was sold to Puma Energy in 2015 for use as a petroleum storage and distribution terminal.

Milford Haven is both a town and a community in Pembrokeshire, Wales. It is situated on the north side of the Milford Haven Waterway, an estuary forming a natural harbour that has been used as a port since the Middle Ages.