Those are, of course, excluding the Blues’ four loan stars - whose agreements come to a conclusion at the end of the season.
Among those contracted names who have their deals coming to an end at the close of the campaign include Ronan Curtis, Jay Mingi, Louis Thompson & Clark Robertson.
With the January window recently closing, John Mousinho has revealed Pompey are yet to hold talks with a large number of those players - with Mingi one exception.
But with 10 players currently without a deal at Fratton Park beyond the end of the season, how does that figure compare to the rest of League One?
With help from Transfermarkt, we’ve taken a look at which third-tier club has the most stars out-of-contract in the summer.
Here’s what we found.
13. Bristol Rovers - 8
Out-of-contract players: Harry Anderson, Sam Finley, Grant Ward, Josh Grant, Nick Anderton, Jamie Egan, Glenn Whelan, Calum MacDonald. Photo: Naomi Baker
14. Cheltenham - 8
Out-of-contract players: Liam Sercombe, Ryan Broom, Ryan Jackson, Charlie Brown, Charlie Raglan, Christian Norton, Dylan Barkers, Shaun MacDonald. Photo: Pete Norton
15. Bolton - 8
Out-of-contract players: Jon Dadi Bodvarsson, Elias Kachunga, Joel Dixon, MJ Williams, Josh Sheehan, Lloyd Isgrove, Kieran Lee, Luke Hutchinson. Photo: Charlotte Tattersall
16. Wycombe - 10
Out-of-contract players: Alfie Mawson, Josh Scowen, Jordan Obita, Sam Vokes, Jason McCarthy, Jack Grimmer, Jack Wakely, Joe Jacobson, Tjay De Barr, Nick Freeman. Photo: Alex Morton