2000: O2K
Guest of Honour Michael Marshall Smith
21-22 October 2000, Royal Dublin Hotel, Dublin
Visit the O2K website
2001: Guest of Honour Anne McCaffrey
13-14 October 2001, Royal Marine Hotel, Dun Laoghaire, Co. Dublin
Visit the Octocon 2001 website
2002: Guest of Honour China Miéville
19-20 October 2002, Royal Marine Hotel, Dun Laoghaire, Co. Dublin
2003: No convention
2004: Guest of Honour Tanith Lee
16-17 October 2004, Glenroyal Hotel, Maynooth, Co. Kildare
2005: Guest of Honour Charles Stross
15-16 October 2005, Glenroyal Hotel, Maynooth, Co. Kildare
2006: Guest of Honour J. G. Jones
14-15 October 2006, Glenroyal Hotel, Maynooth, Co. Kildare
2007: Guest of Honour Alastair Reynolds
13-14 October 2007, Glenroyal Hotel, Maynooth, Co. Kildare
2008: Guest of Honour Ken MacLeod
18-19 October 2008, Royal Dublin Hotel, Dublin
2009: Guest of Honour Mike Carey
Fan Guest of Honour Dave Lally
10-11 October 2009, Camden Court Hotel, Dublin