Partick have decided to cancel the contracts of veteran defender Hugh Murray and forward Gerry O'Donnell.
Murray joined Thistle in the summer of 2012 after 16 years with St Mirren and was a key player at Firhill in the first half of last season.
But injury and suspension limited his contribution for the remainder of the campaign and the 34-year-old has spent most of this season on loan with Championship side Dumbarton.
O'Donnell was a trainee at Firhill from the early stages of last season and has recently been on loan with Maryhill Juniors.
A statement from Partick read: "Thistle have today cancelled, with immediate effect, the contracts of Hugh Murray and Gerry O'Donnell.
"We wish both Hugh and Gerry the very best for the future and thank them for their contribution while at Firhill.
"Both players are now free agents and can sign for other clubs."