The Christmas number one single is a single that reaches number one on the national pop music charts in the week in which Christmas Day falls. It is primarily a pop culture phenomenon in the United Kingdom^[1] and Republic of Ireland.

• List of UK Singles Chart number ones of the 1950s
• List of UK Singles Chart number ones of the 1960s
• List of UK Singles Chart number ones of the 1970s
• List of UK Singles Chart number ones of the 1980s
• List of UK Singles Chart number ones of the 1990s
• List of UK Singles Chart number ones of the 2000s
• List of UK Singles Chart number ones of the 2010s
• List of UK Singles Chart number ones of the 2020s
• List of UK Singles Chart Christmas number ones

• Official Audio Streaming Chart § Number one songs
• List of Official Subscription Plays Chart number-one songs of the 2000s
• List of Official Subscription Plays Chart number-one songs of the 2010s (ended November 2013)
• Official Classical Singles Chart § Number ones
• Lists of UK Dance Chart number-one singles (annual lists)
• Lists of UK Indie Chart number-one singles (annual lists)
• Lists of UK Rock Chart number-one singles (annual lists)
• Lists of UK R&B Chart number-one singles (annual lists)

• Scottish Singles and Albums Charts § Number ones