Brian Ó Domhnaill (['b???i?n?? o? 'd???wn???l?]; born 18 October 1977) is an Irish independent politician who has served as a Senator for the Agricultural Panel since August 2007.Ó Domhnaill is from Cloughaneely in County Donegal.
He attended the University of Ulster where he obtained a bachelor's degree in Food Technology Management.
He was a sports scholarship student at the university and is a former Irish international athlete.A member of Donegal County Council for the Glenties area from 2004 to 2007, Ó Domhnaill topped the poll on his first occasion running as the Fianna Fáil candidate in the Glenties local electoral area.
He was an unsuccessful candidate at the Seanad election for the Industrial and Commercial Panel in 2007.
He was elected to Údarás na Gaeltachta board in 1999 and re-elected in 2005.
He was nominated by the Taoiseach, Bertie Ahern to the Seanad on 3 August 2007.
He was the Fianna Fáil Seanad spokesperson on Lifelong Learning, Youth Work and School Transport in the 23rd Seanad.
He was the Fianna Fáil Seanad spokesperson on Agriculture, Marine and Fisheries.He was the Fianna Fáil candidate in the 2010 by-election in the Donegal South-West constituency, which was held on 25 November 2010.
He received 7,344 first preference votes (21.3%) and finished in third place on the final count.
The seat was won by Pearse Doherty of Sinn Féin.
He was an unsuccessful candidate at the 2011 general election for Donegal South-West.
He was elected to the Seanad on the Agricultural Panel in April 2011.
In July 2013, during the Protection of Life During Pregnancy Bill 2013 Seanad debate, Ó Domhnaill claimed that allowing abortions in the case of foetal anomalies would deprive Ireland of future Special Olympics athletes.
He also remarked that Down Syndrome babies could be "left to die on sterilised trays".