Nick Grimshaw's show has recovered from the worst-ever listening figures last summer and regained almost 800,000 listeners on his Radio 1 breakfast show.
He pulled back to around 5.72m listeners last week: up from 4.93m in the third quarter.
Ben Cooper, controller of BBC Radio 1, 1Xtra and Asian Network, said he was "very pleased that Radio 1 continues to grow bot on-air and online".
"We just got a record 1.87bn YouTube views," he added, "which means more new, young and diverse audiences enjoying the BBC."
BBC Radio 1 as a whole enjoyed an increase in listeners, attracting 9.84mn a week in the final quarter of 2017 compared to 9.69m in the third.
Chris Evans' Radio 2 Breakfast Show and the Today programme on BBC Radio 4 also added listeners.
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