The Office for National Statistics (ONS) said babies called Dua doubled in 2019 compared with 2017, when the singer had her first UK number one.
Kylo's popularity has risen since the new Star Wars films started in 2015.
But Oliver and Olivia are still number one in England and Wales, with more than 9,000 babies named in 2019.
The ONS said 126 babies were called Dua in 2019, compared with 63 in 2017, suggesting that like her first UK number one single the singer has set New Rules for naming inspiration.