Joe O'Brien (born 1976/1977) is an Irish Green Party politician who served as a Minister of State from July 2020 to January 2025.

[6] In a submission to the Oireachtas Joint Committee On Foreign Affairs And Trade in 2012, he set out the EAPPI's position in advocating a ban on the sale of Israeli products produced in the Occupied Palestinian Territories.

[3][10][11] In December 2019, he won a discrimination case at the Workplace Relations Commission against Irish Rail over its failure to maintain working lifts at train stations in Balbriggan and Skerries.

[13][14] During the 2020 election campaign, O'Brien was listed (among other candidates) as a supporter of the Oireachtas Committee on Health's recommendations to address foetal anti-convulsant syndrome,[15] of the Ireland Palestine Solidarity Campaign's proposal to prohibit the import of goods from "illegal settlements in Palestine" and to the right to free speech and non-violent activism,[16] and of The Wheel's "Stronger Communities, Stronger Ireland" manifesto for charities and voluntary organisations.

[21][22][23][24] In July 2020, O'Brien abstained from voting for the Government's Residential Tenancies and Valuation Bill, and was sanctioned by Green Party leader Eamon Ryan by having his speaking rights withdrawn for two months.