The track is now the longest-running UK chart-topper since Rihanna's Umbrella, which racked up an unbroken 10-week run at the summit in 2007.
One Dance sold just shy of 85,000 combined chart sales, made up of 23,000 sales and 6.15 million streams.
This week's highest new entry goes to Clean Bandit and Louisa Johnson's new single Tears, which dropped in at number six.
The track gives last year's X Factor winner a second top 10, following her number nine peak with the winner's single Forever Young.
US singer-songwriter Gnash enters the top 10 for the first time with I Hate You, I Love You, up four spots to number eight.
There are two more big climbers: Cheat Codes and Kris Kross Amsterdam's Sex - a reworking of Salt-N-Pepa's Let's Talk About Sex - which lifts six places to number 14; and Pink's Just Like Fire jumped 14 spots to 22.
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