Marc MacSharry (born 12 July 1973) is an Irish Fianna Fáil politician who has been a member of Dáil Éireann since February 2016. Born in Dublin, he was educated in Sligo and at Castleknock College, Dublin. He is the son of Ray MacSharry, the former Fianna Fáil minister and European Commissioner.
Previously he was a long-serving member of Seanad Éireann. He was first elected to the Seanad in 2002 by the Industrial and Commercial Panel, and was appointed Seanad spokesperson on Communications, Marine and Natural Resources. He was re-elected in 2007 and was appointed Seanad spokesperson on Finance.
On 31 January 2011, prior to that year's general election, MacSharry was appointed to the Fianna Fáil frontbench by the new party leader Micheál Martin, as spokesperson on Tourism and Arts. MacSharry was a candidate at the 2011 general election in the Sligo–North Leitrim constituency, but was not elected. He was re-elected to the Seanad in April 2011 and was appointed Fianna Fáil Seanad spokesperson on Health. His political career to date has included serving as a member of the Forum on Europe, and of Oireachtas committees on Communications, Marine & Natural Resources, Health, and Finance; he has also served on the Committee of Inquiry into The Banking Crisis and on the Houses of Oireachtas Commission, and is currently a member of the Dáil's Committee of Public Accounts.
He was elected to the Dáil for the Sligo–Leitrim constituency at the 2016 general election.