Fenn's, Whixall and Bettisfield Mosses National Nature Reserve is a national nature reserve which straddles the border between England and Wales, near Whixall and Ellesmere in Shropshire, England and Bettisfield in Wrexham County Borough, Wales. The reserve is part of the Midland Meres and Mosses, an Important Plant Area which was declared a Wetland of International Importance under the Ramsar Convention in 1997. It is also a European Special Area of Conservation.