This is a list of Belgian football transfers for the 2018 summer transfer window. Only transfers involving a team from the professional divisions are listed, including the 16 teams in the Belgian First Division A and the 8 teams playing in the Belgian First Division B.
The summer transfer window will open on 1 July 2018, although several transfers will be announced prior to that date. Players without a club may join one at any time, either during or in between transfer windows. The transfer window ends on 1 September 2018, although a few completed transfers could still be announced a few days later.
After the end of the 2017–18 season, several players will return from loan to another club or will not have their contracts extended. These will be listed here when the date is otherwise not specified.
^Raman was already on loan from Standard Liège to Fortuna Düsseldorf during the 2016-17 season. The loan was extended for another season.
^Raman was already on loan from Standard Liège to Fortuna Düsseldorf during the 2016-17 season and the loan had only recently been extended until June 2019. Düsseldorf now opted to pay for the full transfer of Raman.
^Yatabaré was already on loan from Werder Bremen to Antwerp during the 2017-18 season. Antwerp activated the clause to make the transfer permanent.
^Bagayoko was already on loan from OH Leuven to Mechelen since the winter 2017–18 transfer window and all parties now agreed to make the transfer permanent.
^Trezeguet was already on loan from Anderlecht to Kasımpaşa since the summer 2017 transfer window. Kasımpaşa activated the clause to make the move permanent.
^De Maeyer was on loan from Beerschot Wilrijk to Oosterzonen Oosterwijk during the 2017–18 season. The loan ended and De Maeyer was now sold to Rupel Boom.
^Pereira was on loan from Club Brugge to Sport Recife since the winter 2017–18 transfer window. The loan ended and Pereira was now loaned to Chapecoense.
^Santermans was already on loan from Den Bosch to Lommel since the winter 2017–18 transfer window. All parties agreed to make the transfer permanent.
^Roef was already on loan from Anderlecht to Waasland-Beveren during the 2016–17 season. The loan was extended for another season.
^Storm was on loan from Club Brugge to OH Leuven since the winter 2016-17 transfer window. The loan ended and Storm was sold to Mechelen.
^Laifis was already on loan from Olympiacos to Standard Liège since the summer 2016 transfer window. Standard Liège activated a clause in the contract to make the transfer permanent.
^Ndongala was already on loan from Standard Liège to Genk since the summer 2017 transfer window. All parties agreed to make the transfer permanent.
^Damblon was on loan from Sint-Truiden to RWDM47 during the 2017–18 season. The loan ended and Damblon was now sold to Rupel Boom.
^Swerten was on loan from Lommel to Tienen during the second half of the 2017–18 season. The loan ended and Swerten was sold to Patro Eisden Maasmechelen.
^Rodrigues was already on loan from Porto to Antwerp since the summer 2017 transfer window. All parties agreed to make the transfer permanent.
^Attal was already on loan from Paradou to Kortrijk, Kortrijk activated the claude to make the transfer permanent.
^Belfodil was on loan from Standard Liège to Werder Bremen since the summer 2017 transfer window. The loan ended and Belfodil was sold to Hoffenheim.
^Lemoine was on loan from Club Brugge to Roeselare since the summer 2017 transfer window. The loan ended and Lemoine was sold to Mechelen.
^Butez was already on loan from Lille to Excel Mouscron during the 2016–17 season. The loan ended and the contract of Butez at Lille was annulled, allowing Butez to move to Excel Mouscron as a free player.
^Van Eenoo was already on loan from Kortrijk to Westerlo since the winter 2017-18 transfer window. All parties agreed to make the transfer permanent.
^Saief was already on loan from Gent to Anderlecht since the winter 2017–18 transfer window. Anderlecht activated the clause to make the move permanent.
^Van Landschoot was on loan from Club Brugge to Eindhoven. The loan ended and van Landschoot was now loaned to OH Leuven.
^Bolingi was on loan from Standard Liège to Excel Mouscron. The loan ended and Bolingi was now sold to Antwerp.
^Soumah was already on loan from Gent to Westerlo since the summer of 2017. All parties agreed to make the transfer permanent.
^Kindermans was on loan from KV Mechelen to Union SG since the 2017–18 winter transfer window. The loan ended and Kindermans was sold to RWDM47.
^Carcela was already on loan from Granada to Standard Liège since the 2017–18 winter transfer window. All parties agreed to make the transfer permanent.
^Dossevi was already on loan from Standard Liège to Metz during the 2017–18 season. Metz activated the clause to make the move permanent.
^Coussement was on loan from Cercle Brugge to Knokke during the 2017-18 season. After the loan ended, Coussement was released by Cercle Brugge and moved to Zwevezele.
^De Smul was on loan from Kortrijk to Deinze during the 2017–18 season. After the loan ended, De Smul was released by Kortrijk.
^Dhondt was already on loan from Waasland-Beveren to Knokke during the 2017–18 season. After the loan ended, Dhondt moved to Knokke on a permanent basis.
^Oto'o was on loan from Braga to Westerlo since the summer 2016 transfer window. All parties agreed to make the transfer permanent.
^Sarr was on loan from Kortrijk to Châteauroux during the 2017-18 season. After the loan ended, Sarr was released by Kortrijk.
^Clepkens was on loan from Beerschot Wilrijk to Lommel during the 2017–18 season. The loan ended and Clepkens was released to Knokke.
^Cerigioni was on loan from Waasland-Beveren to Roeselare during the 2017–18 season. The loan ended and Cerigioni was sold to Lommel.
^Kehli was already on loan from Lokeren to OH Leuven during the second half of the 2017–18 season. The loan ended and Kehli was transferred to OH Leuven on a permanent basis.
^Bangoura was on loan from Union SG to Eendracht Aalst during the 2017–18 season. The loan ended and Bangoura was now sold to RFC Liège.
^The deal involves the agreement that Ket will be on loan from Lommel to Quick Boys until the winter 2018-19 transfer window, after which Ket will make a permanent transfer.
^Slagveer was on loan from Lokeren to Twente during the 2017–18 season. The loan ended and Slagveer was now loaned to Emmen.
^Milićević was on loan from Gent to Metz during the 2017–18 season. The loan ended and Milićević was now sold to Eupen.
^Buta was already on loan from Benfica to Antwerp during the 2017–18 season. The loan ended but all parties came to an agreement to make the transfer permanent.
^Mata was on loan from Charleroi to Genk during the 2017–18 season. The loan ended and Mata was sold to Club Brugge.
^McGree was on loan from Club Brugge to Newcastle Jets during the second half of the 2017–18 season. The loan ended and McGree was now loaned to Melbourne City.
^Arcus was already on loan from Cercle Brugge to Auxerre during the 2017–18 season. All parties agreed to make the transfer permanent.
^Moore was already on loan from Leicester City to OH Leuven during the 2017–18 season. The loan was extended for another season.
^Dompé was on loan from Standard Liège to Amiens during the 2017–18 season. The loan ended and Dompé was sold to Gent.
^Doumbia was on loan from Anderlecht to Zulte Waregem during the 2017-18 season. The loan ended and Doumbia was sold to Akhmat Grozny.
^Faes was on loan from Anderlecht to Excelsior during the 2017–18 season. The loan ended and Faes was sold to Oostende.
^Inbrum was on loan from Gent to Ashdod during the second half of the 2017–18 season. The loan ended and Inbrum was now loaned to Beitar Jerusalem.
^Vancamp was on loan from Anderlecht to Roda JC during the 2017–18 season. The loan ended and Vancamp was sold to Beerschot Wilrijk.
^Acolatse was already on loan from Club Brugge to Sint-Truiden during the 2017–18 season. All parties agreed to make the transfer permanent.
^Vanheusden was already on loan from Internazionale to Standard Liège during the second half of the 2017-18 season. The loan was extended for another season.
^Lallemand was on loan from Kortrijk to Deinze during the 2017–18 season. After the loan ended, the contract of Lallemand with Kortrijk had expired, allowing him to move as a free agent to Deinze.
^Naah was already on loan from Manchester City to Tubize during the 2017–18 season. Naah's contract at Manchester City ended and Tubize signed him permanently.
^Perbet was on loan from Club Brugge to Kortrijk during the 2017–18 season. The loan ended and Perbet was now sold to Charleroi.
^Leya Iseka was on loan from Anderlecht to Zulte Waregem during the 2017–18 season. The loan ended and Leya Iseka was sold to Toulouse.
^Teunckens was already on loan from Club Brugge to Antwerp during the 2017–18 season. All parties agreed to make the transfer permanent.
^Lynen was already on loan from Club Brugge to Telstar during the second half of the 2017–18 season. All parties agreed to make the transfer permanent.
^Mmaee was on loan from Standard Liège to MVV during the 2017–18 season. The loan ended and Mmaee was sold to Sint-Truiden.
^Badibanga was on loan from Standard Liège to Lierse during the second half of the 2017–18 season. The loan ended and Badibanga was sold to Waasland-Beveren.
^Berben was on loan from OH Leuven to Oosterzonen during the second half of the 2017–18 season. The loan ended and Berben was sold to Lommel.
^Verburgh was on loan from Club Brugge to Waasland-Beveren during the second half of the 2017–18 season. The loan ended and Verburgh was now sold to Roda JC.
^Azevedo was on loan from OH Leuven to Lommel during the second half of the 2017–18 season. The loan ended and Azevedo signed as a free agent player for Lommel.
^Bongonda was already on loan from Celta de Vigo to Zulte Waregem during the 2017–18 season. All parties agreed to make the transfer permanent.
^Cavanda was already on loan from Galatasaray to Standard Liège during the 2017–18 season. All parties agreed to make the transfer permanent.
^Janssens was on loan from Genk to MVV during the 2017-18 season. The loan ended and Janssens was now sold to Westerlo.
^Vagner was on loan from Excel Mouscron to Boavista during the 2017–18 season. The loan ended and Vagner was now sold to Qarabağ.
^Badji was on loan from Anderlecht to Kayserispor during the 2017–18 season. The loan ended and Badji was now sold to Bursaspor.
^Jambor was on loan from Lokeren to Osijek during the 2017–18 season. The loan ended and Jambor was now sold to Široki Brijeg.
^Lambrecth was on loan from Anderlecht to Waremme during the 2017–18 season. The loan ended and Lambrecth was released.
^Sula was on loan from OH Leuven to Lommel during the 2017-18 season. The loan ended and Sula was sold to Waasland-Beveren.
^Graovac was on loan from Excel Mouscron to Željezničar during the 2017-18 season. The loan ended and Graovac was sold to Waasland-Beveren.
^Matheus was already on loan from Londrina to Antwerp during the 2017-18 season. The loan ended but all parties came to an agreement to make the transfer permanent.
^Miya was on loan from Standard Liège to Sabail since the 2017-18 winter transfer window. The loan ended and Miya was sold to Gorica.
^Salah was on loan from Union SG to Sint-Truiden during the 2017-18 season. The loan ended and Salah was sold to Olympic Charleroi.
^Stevance was on loan from Charleroi to Tubize during the 2017-18 season. The loan ended and Stevance was sold to Tours.
^Kage was on loan from Kortrijk to Kardemir Karabükspor during the second half of the 2017–18 season. The loan ended and Kage was now loaned to Adana Demirspor.
^Mitrović was on already loan from Besiktas to Club Brugge during the second half of the 2017–18 season. All parties agreed to make the transfer permanent.
^Olayinka was on loan from Gent to Zulte Waregem during the 2017–18 season. The loan ended and Olayinka was now sold to Slavia Pragua.
^Rotariu was on loan from Club Brugge to Excel Mouscron during the 2017–18 season. The loan ended and Rotariu was now loaned to AZ.
^Awoniyi was on loan from Liverpool to Excel Mouscron during the 2017–18 season. The loan ended and Awoniyi was now loaned to Gent.
^Brodić was already on loan from Club Brugge to Catania since the 2017–18 winter transfer window. All parties agreed to make the transfer permanent.
^Van Vaerenbergh was on loan from Club Brugge to Eindhoven. The loan ended and Van Vaerenbergh was now sold to Dender EH.
^Verdier was on loan from Eupen to Mechelen during the second half of the 2017-18 season. After the loan ended, Verdiers contract was terminated, allowing him to move to Stade Lavallois.
^Delorge was on loan from Genk to Dordrecht during the 2017-18 season. After the loan ended, Delorge was sold to Dinamo București.
^Naranjo was on loan from Genk to Leganés during the 2017-18 season. After the loan ended, Naranjo was sold to Tenerife.
^Niňaj was on loan from Lokeren to Žilina during the second half of the 2017-18 season. After the loan ended, Niňaj was sold to Fortuna Sittard.
^Rherras was on loan from Mechelen to Hibernian during the second half of the 2017-18 season. After the loan ended, Rherras' contract was terminated allowing him to move as a free player to Béziers.
^Although the news was announced on 24 July, the transfer only occurred on 1 August, to allow Kaya to take part in the opening match of Zulte Waregem.
^Bala was on loan from Zulte Waregem to Hapoel Acre during the 2017-18 season. The loan ended and Bala was now loaned to Hapoel Marmorek.
^Reichert was on loan from Zulte Waregem to Hapoel Acre during the first half og 2018. The loan ended and Reichert was now loaned to Ashdod.
^Kiese Thelin was on loan from Anderlecht to Waasland-Beveren during the 2017-18 season. Kiese Thelin was now loaned to Leverkusen.
^Mees was on loan from Mechelen to Rupel Boom since the 2016 summer transfer window. The loan ended and Mees was now loaned to Duffel.
^Beridze was on loan from Gent to Trenčín during the 2017-18 season. The loan ended and Beridze was now loaned to Újpest.
^Pina Isla was already on loan from Club Brugge to Alavés during the 2017-18 season. The loan ended but all parties agreed to make the move permanent.
^Govea was on loan from Porto to Excel Mouscron during the 2017-18 season. The loan ended and Govea was now loaned to Antwerp.
^Dussenne was on loan from Crotone to Gent during the 2017-18 season. The loan ended and Dussenne was now sold to Excel Mouscron.
^Charisis was on loan from PAOK to Sint-Truiden during the 2017-18 season. The loan ended and PAOK was now loaned to Kortrijk.
^Oularé was on loan from Watford to Antwerp during the 2017-18 season. The loan ended and Oularé was now loaned to Standard Liège.
^Peffer was on loan from Mechelen to Westerlo during the 2017-18 season. The loan ended and Peffer was now loaned to Dessel Sport.
^Lokando was on loan from OH Leuven to Heist during the 2017–18 season. After the loan ended, Lokando was released to RWDM47.
^Buyl was on loan from Cercle Brugge to Westerlo during the second half of the 2017-18 season. All parties agreed to make the transfer permanent.
^Mühren was on loan from Zulte Waregem to Sparta Rotterdam during the 2017-18 season. The loan ended and Mühren was now loaned to NAC Breda.
^Bruno was on loan from Leipzig to Anderlecht during the 2017–18 season. The loan ended and Bruno was now sold to Charleroi.
^Coopman was on loan from Club Brugge to Zulte Waregem during the 2017–18 season. The loan ended and Coopman was now sold to Oostende.
^De Sart was on loan from Middlesbrough to Zulte Waregem during the 2017–18 season. The loan ended and De Sart was now sold to Kortrijk.
^Mmaee was on loan from Standard to Waasland-Beveren during the 2017–18 season. The loan ended and Mmaee was now loaned to AGF.
^Mombongo-Dues was on loan from Union SG to RFC Liège during the 2017–18 season. After the loan ended, Mombongo-Dues was released by Union SG, allowing him to move as a free agent player to Patro Esden Maasmechelen.
^Van Rhijn was already on loan from Club Brugge to AZ during the 2017-18 season. All parties agreed to make the transfer permanent.
^Van Roose was on loan from Cercle Brugge to Torhout during the 2017-18 season. The loan ended and Van Roose was now loaned to Wingene.
^Davidzada was already on loan from Gent to Maccabi Tel Aviv during the 2017-18 season. All parties agreed to make the transfer permanent.