| 21 Dec 17 | P. Rodríguez Patricio Rodríguez |  AEK AthensAEK | → |  Newcastle JetsNEW | Free |
| 28 Nov 17 | H. Delbridge Harrison Delbridge |  FC CincinnatiCIN | → |  Melbourne City FCMCY | Free |
| 08 Nov 17 | I. Franjic Ivan Franjic | DFXDaegu FCDaegu FC | → |  Brisbane RoarBRR | Free |
| 08 Sept 17 | E. Bauthéac Eric Bauthéac |  LilleLILL | → | Brisbane RoarBRR | Free |
| 08 Sept 17 | E. Bauthéac Eric Bauthéac | LilleLILL | → | Brisbane RoarBRR | Free |
| 03 Sept 17 | X. Torres Xavi Torres |  Sporting GijónRSG | → |  Perth GloryPER | Free |
| 21 Aug 17 | B. Schenkeveld Bart Schenkeveld |  PEC ZwollePEC | → | Melbourne City FCMCY | Undisclosed |
| 21 Aug 17 | B. Schenkeveld Bart Schenkeveld | PEC ZwollePEC | → | Melbourne City FCMCY | Undisclosed |
| 16 Aug 17 | M. Sánchez Matías Sánchez |  TemperleyTEMP | → |  Melbourne VictoryMVC | Free |
| 16 Aug 17 | M. Sánchez Matías Sánchez | TemperleyTEMP | → | Melbourne VictoryMVC | Free |
| 15 Aug 17 | A. Kaluderovic Andrija Kaluderovic |  PortPOR | → |  Wellington Phoenix FCWEL | Free |
| 15 Aug 17 | K. Matmour Karim Matmour | MXX1860 Munich1860 Munich | → |  Adelaide UnitedADE | Free |
| 13 Aug 17 | A. Mierzejewski Adrian Mierzejewski | AXXAl-SharjahAl-Sharjah | → |  Sydney FCSYD | Undisclosed |
| 09 Aug 17 | A. Guerao Mayoral Andreu | XXX | → | Perth GloryPER | Free |
| 31 Jul 17 | M. Milligan Mark Milligan | BXXBaniyasBaniyas | → | Melbourne VictoryMVC | Free |
| 31 Jul 17 | J. Brimmer Jake Brimmer |  LiverpoolLIV | → | Perth GloryPER | Free |
| 31 Jul 17 | J. Brimmer Jake Brimmer | LiverpoolLIV | → | Perth GloryPER | Free |
| 28 Jul 17 | D. Georgievski Daniel Georgievski | Melbourne VictoryMVC | → | Newcastle JetsNEW | Undisclosed |
| 27 Jul 17 | A. Cisak Alex Cisak |  Leyton OrientLEY | → | Sydney FCSYD | Free |
| 26 Jul 17 | T. Glover Thomas Glover |  Tottenham HotspurTOT | → |  Central Coast MarinersCCM | Loan |
| 26 Jul 17 | J. Adelson Jake Adelson | XXX | → | Newcastle JetsNEW | Free |
| 26 Jul 17 | T. Glover Thomas Glover | Tottenham HotspurTOT | → | Central Coast MarinersCCM | Loan |
| 26 Jul 17 | S. Mauk Stefan Mauk |  NEC NijmegenNEC | → | Melbourne City FCMCY | Loan |
| 24 Jul 17 | Á. Cejudo Álvaro Cejudo |  Real BetisBET | → |  Western Sydney WanderersWSW | Free |
| 24 Jul 17 | Á. Cejudo Álvaro Cejudo | Real BetisBET | → | Western Sydney WanderersWSW | Free |
| 19 Jul 17 | I. Franjic Ivan Franjic | Melbourne City FCMCY | → | DFXDaegu FCDaegu FC | Free |
| 17 Jul 17 | J. Absalonsen Johan Absalonsen |  SonderjyskeSON | → | Adelaide UnitedADE | Free |
| 17 Jul 17 | M. Bridge Mark Bridge |  Chiangrai UnitedCHI | → | Western Sydney WanderersWSW | Free |
| 17 Jul 17 | M. Maccarone Massimo Maccarone |  EmpoliEMP | → | Brisbane RoarBRR | Free |
| 17 Jul 17 | M. Maccarone Massimo Maccarone | EmpoliEMP | → | Brisbane RoarBRR | Free |
| 16 Jul 17 | E. Gülüm Ersan Gülüm |  BesiktasBES | → | Adelaide UnitedADE | Free |
| 05 Jul 17 | O. Magem Oriol Riera |  Deportivo La CoruñaDEP | → | Western Sydney WanderersWSW | Free |
| 05 Jul 17 | O. Magem Oriol Riera | Deportivo La CoruñaDEP | → | Western Sydney WanderersWSW | Free |
| 04 Jul 17 | C. Gameiro Corey Gameiro | Melbourne City FCMCY | → | Brisbane RoarBRR | Free |
| 02 Jul 17 | S. Jamieson Scott Jamieson |  IFKIFK | → | Melbourne City FCMCY | Free |
| 01 Jul 17 | K. Petratos Kosta Petratos | Perth GloryPER | → | Newcastle JetsNEW | Free |
| 01 Jul 17 | J. Maclaren Jamie Maclaren | Brisbane RoarBRR | → |  SV Darmstadt 98DRM | Undisclosed |
| 01 Jul 17 | J. Maclaren Jamie Maclaren | Brisbane RoarBRR | → | SV Darmstadt 98DRM | Undisclosed |
| 01 Jul 17 | D. Petratos Dimitrios Petratos | Brisbane RoarBRR | → | Newcastle JetsNEW | Undisclosed |
| 20 Jun 17 | N. Ansell Nicholas Ansell | Melbourne VictoryMVC | → |  TondelaTON | Free |
| 16 Jun 17 | E. Galekovic Eugene Galekovic | Adelaide UnitedADE | → | Melbourne City FCMCY | Free |
| 12 Jun 17 | K. Barbarouses Kosta Barbarouses | Wellington Phoenix FCWEL | → | Melbourne VictoryMVC | Free |
| 12 Jun 17 | D. Petratos Dimitrios Petratos | UXXUlsanUlsan | → | Newcastle JetsNEW | Free |
| 29 May 17 | A. Golec Antony Golec | BFXBucheon FCBucheon FC | → | Central Coast MarinersCCM | Free |
| 28 May 17 | A. Baró Alan Baró | Melbourne VictoryMVC | → | Central Coast MarinersCCM | Free |
| 16 May 17 | D. McGowan Dylan McGowan | Adelaide UnitedADE | → |  Paços de FerreiraPFC | Free |
| 15 May 17 | R. Williams Rhys Williams | Perth GloryPER | → | Melbourne VictoryMVC | Free |
| 08 Apr 17 | S. Smeltz Shane Smeltz | Wellington Phoenix FCWEL | → |  Pusamania BorneoPUS | Free |
| 01 Feb 17 | Babá |  MaritimoMAR | → | Adelaide UnitedADE | Undisclosed |
| 13 Jan 17 | J. Buijs Jordy Buijs | XXX | → | Sydney FCSYD | Free |
| 02 Jan 17 | A. Redmayne Andrew Redmayne | Western Sydney WanderersWSW | → | Sydney FCSYD | Free |