Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 26.01.2018 | João Mário | Inter | West Ham | Loan |
| 06.01.2018 | J. Cullen | — | West Ham | N/A |
| 03.01.2018 | R. Burke | — | West Ham | N/A |
| 02.01.2018 | R. Oxford | Borussia Mönchengladbach | West Ham | N/A |
| 07.08.2017 | S. Hakšabanović | — | West Ham | € 3M |
| 24.07.2017 | J. Hernández | Bayer Leverkusen | West Ham | € 17.8M |
| 22.07.2017 | M. Arnautović | — | West Ham | € 22.3M |
| 18.07.2017 | J. Hart | Manchester City | West Ham | Loan |
| 01.07.2017 | E. Valencia | Everton | West Ham | N/A |
| 01.07.2017 | P. Zabaleta | Manchester City | West Ham | Free |
| 01.07.2017 | J. Gordon | — | West Ham | N/A |
| 01.07.2017 | Toni Martínez | — | West Ham | N/A |
| 16.05.2017 | S. Hendrie | — | West Ham | N/A |
| 27.01.2017 | R. Snodgrass | — | West Ham | € 12M |
| 20.01.2017 | José Fonte | Southampton | West Ham | € 9.2M |
| 22.11.2016 | M. Samuelsen | — | West Ham | N/A |
| 28.08.2016 | S. Zaza | Juventus | West Ham | Loan |
| 25.08.2016 | E. Fernandes | FC Sion | West Ham | € 6.4M |
| 11.08.2016 | J. Calleri | — | West Ham | Loan |
| 09.08.2016 | A. Ayew | — | West Ham | € 24M |
| 08.08.2016 | A. Masuaku | Olympiakos Piraeus | West Ham | € 7M |
| 12.07.2016 | A. Fletcher | Manchester United | West Ham | N/A |
| 11.07.2016 | G. Töre | Besiktas | West Ham | Loan |
| 02.07.2016 | Toni Martínez | Valencia | West Ham | € 3M |
| 01.07.2016 | Håvard Nordtveit | Borussia Mönchengladbach | West Ham | Free |
| 01.07.2016 | S. Féghouli | Valencia | West Ham | Free |
| 01.07.2016 | L. Page | — | West Ham | N/A |
| 01.07.2016 | R. Burke | — | West Ham | N/A |
| 01.07.2016 | M. Lanzini | — | West Ham | € 12M |
| 01.07.2016 | J. Cullen | — | West Ham | N/A |
| 29.06.2016 | J. Gordon | — | West Ham | N/A |
| 01.06.2016 | Sam Westley | — | West Ham | N/A |
| 01.06.2016 | L. Chambers | — | West Ham | N/A |
| 01.06.2016 | M. Samuelsen | — | West Ham | N/A |
| 14.02.2016 | S. Hendrie | — | West Ham | N/A |
| 31.01.2016 | Emmanuel Emenike | Fenerbahce | West Ham | Loan |
| 20.01.2016 | S. Byram | Leeds | West Ham | € 4.8M |
| 03.01.2016 | D. Henry | — | West Ham | N/A |
| 08.11.2015 | Jordan Antonio Brown | — | West Ham | N/A |
| 01.09.2015 | Alexandre Dimitri Song-Billong | Barcelona | West Ham | Loan |
| 01.09.2015 | Nikica Jelavić | — | West Ham | N/A |
| 01.09.2015 | V. Moses | Chelsea | West Ham | Loan |
| 01.09.2015 | M. Antonio | Nottingham Forest | West Ham | € 9.5M |
| 22.07.2015 | M. Lanzini | — | West Ham | Loan |
| 14.07.2015 | C. Jenkinson | Arsenal | West Ham | Loan |
| 11.07.2015 | A. Ogbonna | Juventus | West Ham | € 11.5M |
| 01.07.2015 | D. Randolph | — | West Ham | Free |
| 01.07.2015 | S. Hendrie | — | West Ham | N/A |
| 01.07.2015 | Nathan Mavila | — | West Ham | N/A |
| 01.07.2015 | D. Henry | — | West Ham | N/A |