| 2026-10-08 | D. Slory | NAC Breda (U18) → Feyenoord | Raise |
| 2026-09-01 | J. Lotomba | Feyenoord → Celtic | Transfer |
| 2026-09-01 | R. Nelson | Άρσεναλ → Feyenoord | Free agent |
| 2026-08-31 | L. Ivanušec | Feyenoord → Dinamo Zagreb | Free agent |
| 2026-08-31 | A. Ueda | Feyenoord → Lille | Transfer |
| 2026-08-31 | J. Lotomba | Feyenoord → Celtic | Transfer |
| 2026-08-31 | F. Kastenmeier | Fortuna Düsseldorf → Feyenoord | Free agent |
| 2026-08-30 | L. Ivanušec | Feyenoord → Dinamo Zagreb | Free agent |
| 2026-08-30 | A. Ueda | Feyenoord → Lille | Transfer |
| 2026-08-30 | C. Tengstedt | Feyenoord → Toulouse | Transfer |
| 2026-08-30 | F. Kastenmeier | Fortuna Düsseldorf → Feyenoord | Free agent |
| 2026-08-29 | C. Tengstedt | Feyenoord → Toulouse | Transfer |
| 2026-08-28 | N. Kasanwirjo | Feyenoord → Brann | Transfer |
| 2026-08-27 | N. Kasanwirjo | Feyenoord → Brann | Transfer |
| 2026-08-25 | R. Nelson | Άρσεναλ → Feyenoord | Free agent |
| 2026-08-19 | A. Ahmedhodžić | Feyenoord → Burnley | Transfer |
| 2026-08-18 | A. Ahmedhodžić | Feyenoord → Burnley | Transfer |
| 2026-08-16 | Javi López | Real Sociedad → Feyenoord | Loan |
| 2026-08-06 | T. Wessels | Jong Feyenoord → Feyenoord | - |
| 2026-08-03 | A. Sliti | Feyenoord → Excelsior | Loan |
| 2026-07-31 | C. Nadje | Feyenoord → AS Eupen | Transfer |
| 2026-07-30 | C. Nadje | Feyenoord → AS Eupen | Transfer |
| 2026-07-30 | C. Nadje | Monterey Bay → Feyenoord | Return from loan |
| 2026-07-30 | D. Giersthove | Feyenoord → Sparta Rotterdam II | Free agent |
| 2026-07-29 | D. Giersthove | Feyenoord → Giersthove Djomar | Free agent |
| 2026-07-29 | D. Giersthove | Feyenoord → Sparta Rotterdam II | Free agent |
| 2026-07-28 | L. Sauer | Feyenoord → VfB Stuttgart | Transfer |
| 2026-07-28 | I. Ka | Feyenoord → Jong AZ | - |
| 2026-07-28 | I. Ka | Feyenoord → AZ Alkmaar | Transfer |
| 2026-07-27 | L. Sauer | Feyenoord → VfB Stuttgart | Transfer |
| 2026-07-27 | C. Stengs | Feyenoord → AZ Alkmaar | Free agent |
| 2026-07-27 | I. Ka | Feyenoord → AZ Alkmaar | Transfer |
| 2026-07-22 | F. Rust | Feyenoord → Telstar | Free agent |
| 2026-07-21 | F. Rust | Feyenoord → Telstar | Free agent |
| 2026-07-20 | C. Stengs | Feyenoord → Stengs Calvin | Free agent |
| 2026-07-20 | C. Stengs | Feyenoord → AZ Alkmaar | Free agent |
| 2026-07-19 | Hwang In-Beom | Feyenoord → Πόρτο | Transfer |
| 2026-07-19 | R. Zerrouki | Feyenoord → Twente | Transfer |
| 2026-07-18 | Hwang In-Beom | Feyenoord → Πόρτο | Transfer |
| 2026-07-18 | R. Zerrouki | Feyenoord → Twente | Transfer |
| 2026-07-15 | Shiloh Kiesar ’t Zand | Feyenoord → Fortuna Sittard | Loan |
| 2026-07-15 | T. Wellenreuther | Feyenoord → VfL Wolfsburg | Transfer |
| 2026-07-15 | T. Ernst | Hertha BSC → Feyenoord | Transfer |
| 2026-07-14 | T. Ernst | Hertha BSC → Feyenoord | Transfer |
| 2026-07-12 | J. Plug | Feyenoord → Excelsior | Loan |
| 2026-07-06 | J. Slory | Feyenoord → Willem II | Loan |
| 2026-06-30 | J. Mitchell | Feyenoord → Sturm Graz | Transfer |
| 2026-06-30 | P. Andreev | Feyenoord → Debreceni VSC | Transfer |
| 2026-06-30 | A. Ouarghi | Feyenoord → Dordrecht | Loan |
| 2026-06-30 | Nacho Ferri | KVC Westerlo → Feyenoord | Transfer |
| 2026-06-30 | Lucas Gardenier | Feyenoord → Dordrecht | Loan |
| 2026-06-30 | Mika Màrmol | Las Palmas → Feyenoord | Free agent |
| 2026-06-30 | C. Vanhoutte | Nice → Feyenoord | Transfer |
| 2026-06-30 | R. Boulahrouz | Feyenoord → Helmond Sport | Free agent |
| 2026-06-30 | J. Hoepel | Feyenoord → FC Volendam | Free agent |
| 2026-06-29 | G. Zechiël | Utrecht → Feyenoord | Return from loan |
| 2026-06-29 | L. Ivanušec | ΠΑΟΚ → Feyenoord | Return from loan |
| 2026-06-29 | J. Slory | GO Ahead Eagles → Feyenoord | Return from loan |
| 2026-06-29 | R. Zerrouki | Twente → Feyenoord | Return from loan |
| 2026-06-29 | C. Stengs | Pisa → Feyenoord | Return from loan |
| 2026-06-29 | N. Kasanwirjo | Fortuna Sittard → Feyenoord | Return from loan |
| 2026-06-29 | J. Mitchell | Sturm Graz → Feyenoord | Return from loan |
| 2026-06-29 | G. Trauner | Feyenoord → Trauner Gernot | Free agent |
| 2026-06-29 | P. Andreev | Lech Poznan → Feyenoord | Return from loan |
| 2026-06-29 | S. Carrillo | Dordrecht → Feyenoord | Return from loan |
| 2026-06-29 | Bae Seung-Gyun | Dordrecht → Feyenoord | Return from loan |
| 2026-06-29 | R. Sterling | Feyenoord → Sterling Raheem | Free agent |
| 2026-06-29 | M. Jeng | Feyenoord → Reims | Return from loan |
| 2026-06-29 | Jimmy Mpanzu | Feyenoord → Sportlust '46 | Free agent |
| 2026-06-29 | S. Benda | Feyenoord → Fulham | Return from loan |
| 2026-06-29 | J. Plug | Dordrecht → Feyenoord | Return from loan |
| 2026-06-29 | Nacho Ferri | KVC Westerlo → Feyenoord | Transfer |
| 2026-04-03 | I. Grootfaam | Feyenoord → Feyenoord | Raise |
| 2026-03-29 | C. Nadje | Feyenoord → Monterey Bay | Loan |
| 2026-03-28 | C. Nadje | Excelsior → Feyenoord | Return from loan |
| 2026-02-11 | R. Sterling | Τσέλσι → Feyenoord | Free agent |
| 2026-02-05 | T. Zaal | Feyenoord → Turku PS | Free agent |
| 2026-02-03 | S. Benda | Fulham → Feyenoord | Loan |
| 2026-02-01 | J. Plug | Feyenoord → Dordrecht | Loan |
| 2026-01-31 | C. Larin | Feyenoord → Mallorca | Return from loan |
| 2026-01-26 | R. Sterling | Τσέλσι → Feyenoord | Free agent |
| 2026-01-25 | P. Andreev | Feyenoord → Lech Poznan | Loan |
| 2026-01-23 | M. Deijl | GO Ahead Eagles → Feyenoord | Transfer |
| 2026-01-22 | Q. Timber | Feyenoord → Marseille | Transfer |
| 2026-01-21 | J. St. Juste | Sporting CP → Feyenoord | Free agent |
| 2026-01-19 | J. Bijlow | Feyenoord → Genoa | Free agent |
| 2026-01-09 | A. Nahany | Feyenoord → Feyenoord | Raise |
| 2026-01-07 | P. Andreev | Racing Santander → Feyenoord | Return from loan |
| 2026-01-05 | N. Kasanwirjo | Feyenoord → Fortuna Sittard | Loan |
| 2026-01-02 | J. Carranza | Feyenoord → Necaxa | Transfer |
| 2026-01-01 | J. Carranza | Leicester → Feyenoord | Return from loan |