This is a list of seasons played by Portsmouth FC Ladies in English football since 2003, when the Hampshire-based side entered the Women's Premier League. In all but one of the seasons since, Portsmouth FC Ladies have played in the Women's Premier League Southern Division, except for one season in the Women's Premier League National Division in the 2012/13 season.
| Season | League | FA Cup | League Cup | Hampshire Cup | Top Goalscorer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Division | P | W | D | L | F | A | Pts | Pos | Name | Goals | ||||
| 2003/2004 | WPL South | 24 | 9 | 1 | 14 | 43 | 48 | 28 | 9 | NA | NA | NA | NA | NA |
| 2004/2005 | WPL South | 22 | 13 | 5 | 4 | 44 | 29 | 44 | 2 | NA | R1 | W | Stacey Nevin | 8 |
| 2005/2006 | WPL South | 22 | 12 | 4 | 6 | 69 | 58 | 40 | 4 | NA | R2 | NA | Charley Wilson | 15 |
| 2006/2007 | WPL South | 22 | 14 | 5 | 3 | 63 | 25 | 47 | 2 | R3 | PRL | W | Brooke Chaplen | 11 |
| 2007/2008 | WPL South | 22 | 13 | 3 | 6 | 69 | 32 | 42 | 4 | R5 | R3 | R/U | Brooke Chaplen | 8 |
| 2008/2009 | WPL South | 22 | 9 | 6 | 7 | 62 | 46 | 33 | 5 | R4 | QF | W | Lisa Langrish | 12 |
| 2009/2010 | WPL South | 22 | 11 | 6 | 5 | 50 | 36 | 39 | 4 | R5 | R3 | W | Zoe Nash | 11 |
| 2010/2011 | WPL South | 18 | 10 | 1 | 7 | 40 | 37 | 31 | 4 | R3 | SF | W | Lindsey Roe | 9 |
| 2011/2012 | WPL South | 18 | 12 | 3 | 3 | 55 | 27 | 39 | 1 | R3 | QF | W | Jemma Tewkesbury | 17 |
| 2012/2013 | WPL National | 18 | 3 | 4 | 11 | 22 | 41 | 13 | 9 | R4 | SF | W | Charley Wilson | 20 |
| 2013/2014 | WPL South | 20 | 12 | 1 | 7 | 42 | 29 | 37 | 4 | QF | GS | W | Lucy Quinn | 20 |
| 2014/2015 | WPL South | 22 | 18 | 2 | 2 | 62 | 25 | 56 | 1 | R4 | SF | W | Ini Umotong | 29 |
| Champions | Runners-up | Promoted | Relegated |
Note: bold text indicates a competition won.