Borussia Dortmund (Bundesliga): every transfer in and out, fees paid and earned, squad market value, €1015m spent and €1125m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-12 | Kauã Prates | Cruzeiro | Dortmund | €7m |
| 2026-07-01 | Samuele Inácio | B. Dortmund II | Dortmund | — |
| 2026-07-01 | Salih Özcan | Dortmund | Without Club | — |
| 2026-07-01 | Niklas Süle | Dortmund | Retired | — |
| 2026-07-01 | Julian Brandt | Dortmund | Without Club | — |
| 2026-07-01 | Joane Gadou | Salzburg | Dortmund | €20m |
| 2026-03-20 | Luca Reggiani | B. Dortmund U19 | Dortmund | — |
| 2026-01-22 | Julien Duranville | Dortmund | Basel | Loan |
| 2026-01-05 | Cole Campbell | Dortmund | Hoffenheim | Loan |
| 2026-01-02 | Pascal Groß | Dortmund | Brighton | €2m |
| 2025-08-29 | Fábio Silva | Wolves | Dortmund | €23m |
| 2025-08-27 | Aarón Anselmino | Chelsea | Dortmund | Loan |
| 2025-08-26 | Carney Chukwuemeka | Chelsea | Dortmund | €20m |
| 2025-08-23 | Giovanni Reyna | Dortmund | Mönchengladbach | €4m |
| 2025-08-18 | Sébastien Haller | Dortmund | Utrecht | Free |
| 2025-07-28 | Diant Ramaj | Dortmund | Heidenheim | Loan |
| 2025-07-09 | Marcel Lotka | Dortmund | F. Düsseldorf | Free |
| 2025-07-07 | Soumaïla Coulibaly | Dortmund | R. Strasbourg | €7.5m |
| 2025-07-05 | Jamie Gittens | Dortmund | Chelsea | €56m |
| 2025-07-01 | Youssoufa Moukoko | Dortmund | Copenhagen | €5m |