Ian James Marshall OBE (born 1968)[3] is a farmer and former Ulster Unionist Party (UUP) politician from Markethill, County Armagh, in Northern Ireland.

[11] In August 2017, Marshall was appointed Business Development Manager at the Institute for Global Food Security in Queen's University Belfast.

He was approached to stand by then Taoiseach and Fine Gael leader Leo Varadkar; his candidacy was also supported by Sinn Féin.

[19] In The Irish Times, columnist Fintan O'Toole lamented that "it was much more important for the Government parties to vote for one of their own than to place a single liberal unionist from Armagh (Ian Marshall) in the Oireachtas.

[24][25] Marshall stood unsuccessfully as the UUP candidate for West Tyrone in the 2022 Northern Ireland Assembly election, polling 1,876 votes, 4.1% of the total.