The track marks her sixth chart-topper in the country, fending off competition from fun., who hold at two with 'Some Nights'.
Meanwhile, Rudimental jump from six to three with 'Feel The Love, Justice Crew vault 24 to five with 'Boom Boom' and Gym Class Heroes' 'The Fighter' completes the top ten.
Further down the chart, Owl City and Carly Rae Jepsen's 'Good Time' climbs 15 to 11, Outasight's 'Tonight in the Night' re-enters at 18 and Maroon 5 debut at 21 with 'One More Night'.
B.o.b and Taylor Swift's 'Both of Us' lifts from 36 to 26, Missy Higgins's 'Everyone's Waiting' starts 31 and Flo Rida's 'Run' lands at 44.
The Top 10 singles in full (click where possible for our reviews):
1. (-) Pink: 'Blow Me (One Last Kiss)'
2. (2) fun. 'Some Nights'
3. (6) Rudimental ft. John Newman: 'Feel The Love'
4. (4) Katy Perry: 'Wide Awake'
5. (24) Justice Crew: 'Boom Boom'
6. (3) Flo Rida: 'Whistle'
7. (8) will.i.am ft. Eva Simmons: 'This Is Love'
8. (7) Chris Brown: 'Don't Wake Me Up'
9. (5) Maroon 5 ft. Wiz Khalifa: 'Payphone'
10.(9) Gym Class Heroes ft. Ryan Tedder: 'The Fighter'
Listen to Pink's 'Blow Me (One Last Kiss)' below: