Gemma O'Doherty (born 24 August 1968) is an Irish former journalist.
As a former staff writer for the Irish Independent, O'Doherty worked in a range of areas, including on the criminal justice system and corruption, which allegedly led to her dismissal in 2014.
As a political candidate, O'Doherty failed to secure the nominations required to run in the 2018 Irish presidential election, was unsuccessful in the 2019 European Parliament election in Ireland (with 1.85% of first preference votes in the Dublin constituency), and also unsuccessful in the 2019 Dublin Fingal by-election (with 4% of the vote).
O'Doherty's controversial views on a range of subjects have led to a number of legal actions and calls for changes to hate-crime legislation.
She has been described in the media as a conspiracy theorist and, in July 2019, was banned from YouTube for violations of the site's policies on hate speech.