List of number-one singles of 2005 (Ireland)

This list of number-one hits in Ireland in 2005. It was the year of 19 number-one singles and 18 number-one albums.

• Band Aid 20 - Do They Know It 's Christmas? 5 weeks (December 9, 2004 - January 5, 2005 )

• 4 weeks ( 6 January-2 February )

• 3 weeks ( February 24-March 16 )

• 2 weeks ( 17 March to 30 March )

• Five weeks ( March 31 to May 4 )

• 4 weeks ( May 5-June 1 )

• 4 weeks ( June 2-June 29 )

• 4 weeks ( June 30 to July 20 )

• 4 weeks ( July 21 to August 17 )

• 4 weeks ( August 18 to September 7 )

• 3 weeks ( 8 September to 5 October )

• 3 weeks ( October 6 to October 26 )

• 6 weeks ( 27 October to 7 December )

• U2 - How to Dismantle on Atomic Bomb 5 weeks (December 9, 2004 - January 5, 2005 )

• 2 weeks ( January 6 to January 19 )

• 7 weeks ( January 20-March 9, a total of 11 weeks)

• 4 weeks ( 31 March to 27 April, a total of 11 weeks)

• 3 weeks ( April 28 to May 18, a total of 7 weeks)

• 2 weeks ( May 19-June 1 )

• 3 weeks ( June 9 to June 29, a total of 4 weeks)

• 3 weeks ( September 15-October 5 )

• 4 weeks ( November 10 to December 7 )

• 4 weeks ( 8 December 2005 - January 4, 2006 )