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.
5. MK Dons - 5
Out-of-contract players: Daniel Harvie, Sullay Kaikai, Dean Lewington, Zak Jules, Tennai Watson. Photo: Pete Norton
6. Barnsley - 5
Out-of-contract players: Luke Thomas, Clarke Oduor, James Norwood, Jordan Helliwell, Aidan Marsh. Photo: Morgan Harlow
7. Morecambe - 5
Out-of-contract players: Ryan Cooney, Courtney Duffus, Ashley Hunter, Ryan Delaney, Andre Mendes. Photo: Pete Norton
8. Plymouth - 6
Out-of-contract players: Ryan Hardie, Connor Grant, Danny Mayro, Brendan Galloway, Niall Ennis, James Bolton. Photo: Michael Steele