Marc Phillips (born 8 December 1953^[1]) is a Welsh charity manager and former Plaid Cymru politician.

Phillips was born in Cardiff and educated in Cyfarthfa and Merthyr Tydfil,^[1][2] before working at the Urdd Gobaith Cymru, then the Dyfed Association of Voluntary Service and as Chief Executive of Tenovus.^[2]

Phillips also became active in Plaid Cymru, standing in Llanelli at the 1992 and 1997 general elections,^[1] taking third and then second place. He became Plaid's national vice-chair in 1993, serving for two years. During this period, he stood in the 1994 European election in Mid and West Wales,^[1] achieving the party's best performance at the election.^[3]

From 1996 until 2000, Phillips served as the Chair of Plaid Cymru,^[2] and he also stood for the party in the new Wales constituency at the 1999 European election. He was third on the party list and was not elected.^[4]

Phillips accepted a new job as the head of BBC Children in Need in Wales in 2002,^[2] following which he withdrew from political activity.^[5] However, he remained supportive of the party, was its nomination for the Executive Committee of the All Wales Convention in 2009,^[2] and unsuccessfully applied to be its candidate in the Carmarthen East and Dinefwr constituency at the 2010 general election.^[6]

He is on the Board of Directors, of Pen y Cymoedd Wind Energy Project.^[7]