The Reverend Professor Thomas Glyn Watkin KC FLSW (born 1952) is a Welsh lawyer and the first person to be appointed to the post of First Legislative Counsel to the Welsh Government, taking up his post in April 2007.
He studied law at Pembroke College, Oxford, where he was Oades and Stafford Scholar (1971-1974).
He obtained the degrees of BA (1974), BCL (1975) and MA (1977) from the University of Oxford and was called to the bar by the Middle Temple (1976).
He was elected to the Academy of Private Lawyers of Milan and Pavia in 2002, and is an ordained priest in the Church in Wales.
Upon his appointment the Lord Chancellor, David Gauke MP, referred to Professor Watkin's role as the Welsh Government's "...first principal Legislative Draftsman", noting that he was "involved centrally in establishing and building the legislative drafting capacity of the Welsh Government – in both English and Welsh – in the initial years of primary legislative devolution for Wales".