List of number one songs in January, 2010

What songs were number one in January, 2010? There were 2 Canada #1 songs in January, 2010.

These number one songs in January, 2010 began with Bad Romance by Lady Gaga which went to #1 on 5th December, 2009 and remained at the top spot for 4 weeks.

The last number one song of 2010 was Tik Tok by Kesha which went to #1 on 2nd January, 2010 and remained at the top spot for 7 weeks.