Note: Below is a list of the signings and re-signings that have been confirmed by the clubs. This list is subject to change and will be updated regularly throughout the off-season.
IN
Oscar Brennan (Cabinteely), Dinny Corcoran (St Patrick's Athletic), Rob Cornwall (Shamrock Rovers), Jamie Doyle (Shelbourne), Philip Gannon (Longford Town), Greg Murray (Shelbourne), Kaleem Simon (Longford Town), Fuad Sule (St Patrick's Athletic), Keith Ward (Derry City)
OUT
Keith Buckley (Bray Wanderers), Kurtis Byrne (St Patrick's Athletic), Dean Delany (Shelbourne), Dylan Hayes (released), Jamie Hollywood (Drogheda United), Jake Kelly (Longford Town), Roberto Lopes (Shamrock Rovers), Dean O'Halloran (Waterford), Derek Prendergast (Shelbourne), Mark Quigley (released)
RE-SIGNED
Ismahil Akinade, Stephen Best, Dan Byrne, Dean Casey, Lorcan Fitzgerald, Paddy Kavanagh, Ian Morris, Warren O'Hora, Derek Pender, Dominic Peppard, Shane Supple, Eoin Wearen
IN
Keith Buckley (Bohemians), Anthony Flood (Marconi Stallions), Aaron Greene (Limerick), Gary McCabe (Shamrock Rovers)
OUT
Andrew Lewis (released), Chris Lyons (Shelbourne)
RE-SIGNED
Ryan Brennan, Peter Cherrie, Tim Clancy, Dylan Connolly, Hugh Douglas, Alan Kehoe, Conor Kenna, Kevin Lynch, Jason Marks, Karl Moore, Darragh Noone, Ger Pender, Mark Salmon, Lee Steacy, John Sullivan
IN
Achille Campion (Sligo Rovers), Jimmy Keohane (Sligo Rovers), Conor McCormack (Derry City)
OUT
Matthew Connor (Waterford), Craig Donnellan (Cobh Ramblers), Eric Grimes (Derry City), Gavan Holohan (Galway United), Danny Morrissey (Finn Harps), Dave Mulcahy (Waterford), Chiedozie Ogbene (Limerick), Mark O'Sullivan (Waterford), Ian Turner (Limerick)
RE-SIGNED
Sean Maguire, Kevin O'Connor
IN
Eric Grimes (Cork City), Mark Timlin (St Patrick's Athletic)
OUT
Patrick McClean (Waterford), Conor McCormack (Cork City), Shaun Patton (Sligo Rovers), Niclas Vemmelund (Dundalk), Keith Ward (Bohemians)
RE-SIGNED
Aaron Barry, Nathan Boyle, Josh Daniels, Dean Jarvis, Ryan McBride, Aaron McEneff, Harry Monaghan, Rory Patterson, Scott Whiteside
IN
Gavin Brennan (Shamrock Rovers), Killian Brennan (Shamrock Rovers), Thomas Byrne (Brighton & Hove Albion), Stephen Elliott (Shelbourne), Jamie Hollywood (Bohemians), Conor Kane (St Patrick's Athletic), Gareth McCaffrey (Shamrock Rovers), Ciaran McGuigan (Lansdowne Bhoys), Richie Purdy (Shamrock Rovers)
OUT
TBC
RE-SIGNED
Sean Brennan, Lloyd Buckley, Colm Deasy, Eoghan Dempsey, Mark Doyle, Stephen Dunne, Kevin Farragher, Luke Gallagher, Marc Griffin, Jake Hyland, Stephen McGuinness, Sean Thornton, Adam Wixted
IN
Conor Clifford (Boreham Wood), Sean Hoare (St Patrick's Athletic), Jamie McGrath (St Patrick's Athletic), Niclas Vemmelund (Derry City)
OUT
Andy Boyle (Preston North End), Ronan Finn (Shamrock Rovers), Daryl Horgan (Preston North End), Alan Keane (Crusaders), Darren Meenan (Shamrock Rovers), Michael O'Connor (Shamrock Rovers)
RE-SIGNED
Paddy Barrett, Robbie Benson, Sean Gannon, Ciaran Kilduff, Dane Massey, David McMillan, Stephen O'Donnell, Gary Rogers, Gabriel Sava
IN
Jonny Bonner (Wexford Youths), Killian Cantwell (Galway United), Harry Doherty (Cockhill Celtic), Caolan McAleer (Greenock Morton), Danny Morrissey (Cork City)
OUT
Richard Brush (Ballinamallard), Ryan Curran (Ballinamallard), Kevin McHugh (retired), Tony McNamee (Swilly Rovers)
RE-SIGNED
Ethan Boyle, Ciaran Coll, Michael Funston, Ciaran Gallagher, Gareth Harkin, Packie Mailey, Ryan McConnell, Thomas McMonagle, Damien McNulty
IN
David Cawley (St Patrick's Athletic), Lee Grace (Wexford Youths), Gavan Holohan (Cork City) Ronan Murray (Notts County), Ciaran Nugent (Sligo Rovers)
OUT
Killian Cantwell (Galway United), Ryan Connolly (Shamrock Rovers), Enda Curran (Longford Town), Kevin Horgan (Shamrock Rovers), Stephen Walsh (Longford Town)
RE-SIGNED
Alex Byrne, Padraic Cunningham, Kevin Devaney, Jesse Devers, Stephen Folan, Colm Horgan, Marc Ludden, Conor Melody, Gary Shanahan, Paul Sinnott, Conor Winn
IN
Brendan Clarke (St Patrick's Athletic), Dean Clarke (Shamrock Rovers), David O'Connor (Shamrock Rovers), Chiedozie Ogbene (Cork City), Ian Turner (Cork City)
OUT
Aaron Greene (Bray Wanderers), Shane Lowth (Cobh Ramblers), Sean Russell (Louisville City)
RE-SIGNED
Shane Duggan, Shaun Kelly, Chris Mulhall, John O'Flynn
IN
Ryan Connolly (Galway United), Paul Corry (Northampton Town), Tomer Chencinski (Helsingborgs), Daniel Devine (Firhouse Clover), Ronan Finn (Dundalk), Kevin Horgan (Galway United), Michael O'Connor (Dundalk), Roberto Lopes (Bohemians), David McAllister (Stevenage), Darren Meenan (Dundalk)
OUT
Killian Brennan (Drogheda United), Dean Clarke (Limerick), Rob Cornwall (Bohemians), Patrick Cregg (St Patrick's Athletic), David O'Connor (Limerick), Gary McCabe (Bray Wanderers), Barry Murphy (St Patrick's Athletic)
RE-SIGNED
Aaron Bolger, Sean Boyd, Trevor Clarke, James Doona, Dean Dillon, Shane Hanney, Luke Kiely, Simon Madden, David Webster
IN
Kyle Callan-McFadden (Orlando City), Chris Kenny (Wexford Youths), Shaun Patton (Derry City), Mathew Stevens (Peterborough United - loan)
OUT
Achille Campion (Cork City), Jimmy Keohane (Cork City), Ciaran Nugent (Galway United) Gavin Peers (St Patrick's Athletic)
RE-SIGNED
Mick Leahy, John Russell
IN
Kurtis Byrne (Bohemians), Patrick Cregg (Shamrock Rovers), Barry Murphy (Shamrock Rovers), Alex O'Hanlon (Liverpool), Gavin Peers (Sligo Rovers)
OUT
David Cawley (Galway United), Brendan Clarke (Limerick), Sean Hoare (Dundalk), Conor Kane (Drogheda United), Dylan McGlade (Longford Town), Jamie McGrath (Dundalk), Mark Timlin (Derry City)
RE-SIGNED
Michael Barker, Ian Bermingham, Conan Byrne, Christy Fagan