Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 01.07.2019 | Roberto Jiménez | Espanyol | West Ham | Free |
| 01.07.2019 | N. Trott | West Ham | — | Loan |
| 01.07.2019 | D. Martin | — | West Ham | Free |
| 01.07.2019 | J. Powell | — | West Ham | N/A |
| 01.07.2019 | J. Hugill | — | West Ham | N/A |
| 01.07.2019 | Lucas Pérez | West Ham | Alaves | € 2.3M |
| 01.07.2019 | M. Browne | — | West Ham | N/A |
| 01.07.2019 | J. Cullen | — | West Ham | N/A |
| 01.07.2019 | S. Byram | Nottingham Forest | West Ham | N/A |
| 14.06.2019 | Pablo Fornals | Villarreal | West Ham | € 24M |
| 20.02.2019 | O. Afolayan | West Ham | — | Loan |
| 20.02.2019 | M. Samuelsen | West Ham | — | Loan |
| 21.01.2019 | J. Powell | West Ham | — | Loan |
| 17.01.2019 | S. Hakšabanović | West Ham | — | € 2.6M |
| 04.01.2019 | Vashon Neufville | West Ham | — | Loan |
| 01.01.2019 | S. Nasri | Antalyaspor | West Ham | N/A |
| 30.08.2018 | J. Cullen | West Ham | — | Loan |
| 19.08.2018 | A. Scully | West Ham | — | N/A |
| 13.08.2018 | E. Fernandes | West Ham | Fiorentina | Loan |
| 10.08.2018 | S. Byram | West Ham | Nottingham Forest | Loan |
| 09.08.2018 | Domingos Quina | West Ham | — | N/A |
| 09.08.2018 | Lucas Pérez | Arsenal | West Ham | € 4.4M |
| 09.08.2018 | C. Sánchez | Fiorentina | West Ham | N/A |
| 08.08.2018 | J. Hugill | West Ham | — | Loan |
| 06.08.2018 | S. Hakšabanović | West Ham | — | Loan |
| 01.08.2018 | C. Kouyaté | West Ham | Crystal Palace | € 7.5M |
| 25.07.2018 | M. Samuelsen | West Ham | — | Loan |
| 24.07.2018 | M. Browne | West Ham | — | Loan |
| 22.07.2018 | K. Henry | West Ham | — | Free |
| 15.07.2018 | Felipe Anderson | Lazio | West Ham | € 40.5M |
| 14.07.2018 | F. Balbuena | — | West Ham | € 4M |
| 11.07.2018 | A. Yarmolenko | Borussia Dortmund | West Ham | N/A |
| 10.07.2018 | R. Burke | West Ham | — | N/A |
| 01.07.2018 | O. Afolayan | — | West Ham | N/A |
| 01.07.2018 | R. Snodgrass | Aston Villa | West Ham | N/A |
| 01.07.2018 | R. Fredericks | Fulham | West Ham | Free |
| 01.07.2018 | João Mário | West Ham | Inter | N/A |
| 01.07.2018 | R. Oxford | Borussia Mönchengladbach | West Ham | N/A |
| 01.07.2018 | R. Burke | — | West Ham | N/A |
| 01.07.2018 | J. Hart | West Ham | Manchester City | N/A |
| 20.06.2018 | Ł. Fabiański | — | West Ham | € 7.9M |
| 19.06.2018 | I. Diop | Toulouse | West Ham | € 25M |
| 24.02.2018 | José Fonte | West Ham | — | N/A |
| 07.02.2018 | Patrice Evra | Marseille | West Ham | Free |
| 01.02.2018 | Toni Martínez | West Ham | Valladolid | Loan |
| 31.01.2018 | Kusu Moses Makasi | West Ham | — | Loan |
| 31.01.2018 | A. Ayew | West Ham | — | € 22.9M |
| 31.01.2018 | R. Oxford | West Ham | Borussia Mönchengladbach | Loan |
| 31.01.2018 | R. Burke | West Ham | — | Loan |
| 31.01.2018 | J. Hugill | — | West Ham | N/A |