One to One is an Irish television series which airs on RTÉ One. Since the first edition was broadcast at 12:15pm on 1 October 2006, the programme has featured personal interviews with a well-known figure from Ireland and abroad, one per episode. The second series moved to a Monday slot, beginning on 1 October 2007. A third series was broadcast during the summer months of June and July 2008. The fourth series commenced airing on 10 November 2008.

Series presenters have included Aine Lawlor, Bryan Dobson, George Lee, Richard Crowley, Paul Cunningham, John Murray and Cathal Mac Coille. Guests to have featured in the series include Hans Blix, Michael Smurfit, Michael Colgan, Ben Dunne, clergymen Diarmuid Martin and Peter Sutherland, Ulick McEvaddy, T. K. Whitaker, Seymour Hersh, Alan Johnston, Ruth Bader Ginsburg, Seán FitzPatrick, Roy Foster, Samantha Power, Declan Ganley and Jeffrey Sachs. Each edition is typically approximately forty minutes length in total, with all the interviews available to watch online at RTÉ.ie.