What songs were number one in 2021? This is the full list of the US number one songs from the year 2021. There were a total of 27 US #1 tracks in the year 2021 starting with Willow by Taylor Swift which went to #1 on 26th December, 2020 and remained at the top spot for 1 weeks.
The US song that was number one for the longest single run in 2021 was Butter by BTS which went to number one on 5th June, 2021 and stayed at the top slot for 7 weeks.