The Blues beat Cheltenham 6-1 on the final day of the campaign to be crowned champions, having only topped the table for 32 minutes throughout the entire season.
Scroll down and click through the pages to see all the best celebratory pictures from the day...
9. Pompey celebrate their dramatic League Two title triumph
Conor Chaplin and fans celebrate winning the title | Freelance Photo: Joe Pepler
10. Pompey celebrate their dramatic League Two title triumph
Conor Chaplin, Gareth Evans and Gary Roberts celebrate. | Freelance Photo: Joe Pepler
11. Pompey celebrate their dramatic League Two title triumph
Pompey look out to the fans to celebrate. | Freelance Photo: Joe Pepler
12. Pompey celebrate their dramatic League Two title triumph
Carl Baker celebrates. | Freelance Photo: Joe Pepler
3 / 7