David McCullagh (born 1 December 1967) is an Irish journalist, author and presenter with Raidió Teilifís Éireann (RTÉ), Ireland's national radio and television station, where he has presented the Six One News, alongside Caitríona Perry, since August 2020. He previously presented current affairs television programme Prime Time from 2013 to 2020, and was Political Correspondent with RTÉ News and Current Affairs.