| 2026-10-22 | W. Grigg | Chesterfield → Forest Green | Free agent |
| 2026-10-21 | W. Grigg | Chesterfield → Forest Green | Free agent |
| 2026-10-20 | P. Fearon | Forest Green → West Ham | Return from loan |
| 2026-10-15 | F. Pagel | Maidenhead → Forest Green | Return from loan |
| 2026-10-08 | T. Mcintyre | Aberdeen → Forest Green | - |
| 2026-09-30 | William Merrett | Hereford → Forest Green | Return from loan |
| 2026-09-28 | H. Isted | Forest Green → Altrincham | Free agent |
| 2026-09-20 | J. Marquez | Worthing → Forest Green | Return from loan |
| 2026-09-17 | F. Pagel | Forest Green → Maidenhead | Loan |
| 2026-09-17 | M. Rijks | Bristol Rovers → Forest Green | Loan |
| 2026-09-13 | P. Fearon | West Ham → Forest Green | Loan |
| 2026-09-09 | A. Gbadehan | St. Louis City II → Forest Green | Free agent |
| 2026-09-08 | A. Gbadehan | St. Louis City II → Forest Green | Free agent |
| 2026-09-03 | K. Abrefa | Reading (U21) → Forest Green | Loan |
| 2026-09-03 | K. Abrefa | Reading → Forest Green | Loan |
| 2026-08-25 | F. Sass | Accrington ST → Forest Green | Transfer |
| 2026-08-09 | K. Ajayi | Hemel Hempstead Town → Forest Green | - |
| 2026-08-06 | S. Long | Forest Green → Weston-super-Mare | Free agent |
| 2026-08-06 | J. Marquez | Forest Green → Worthing | Loan |
| 2026-08-05 | Filozofe Mabete | Swindon Town → Forest Green | Loan |
| 2026-07-29 | S. Walsh | Forest Green → Walsh Stephen | Free agent |
| 2026-07-28 | William Merrett | Forest Green → Hereford | Loan |
| 2026-07-23 | L. Mendy | Forest Green → Heart Of Midlothian | Transfer |
| 2026-07-22 | O. Patrick | Tranmere → Forest Green | Free agent |
| 2026-07-22 | L. Mendy | Forest Green → Heart Of Midlothian | Transfer |
| 2026-07-21 | K. Kelly | Liverpool (U21) → Forest Green | Loan |
| 2026-07-16 | E. Ross | Altrincham → Forest Green | Free agent |
| 2026-07-15 | E. Ross | Altrincham → Forest Green | Free agent |
| 2026-07-06 | Sydney Agina | Stoke City → Forest Green | Loan |
| 2026-07-02 | E. Obi | Kidderminster Harriers → Forest Green | - |
| 2026-07-01 | E. Obi | Kidderminster Harriers → Forest Green | - |
| 2026-06-30 | T. Knowles | Forest Green → Barnet | Free agent |
| 2026-06-30 | C. Doidge | Forest Green → Newport County | Free agent |
| 2026-06-30 | H. Bunker | Forest Green → Carlisle | Free agent |
| 2026-06-30 | J. Moore-Taylor | Forest Green → Sutton Utd | Free agent |
| 2026-06-30 | R. Inniss | Forest Green → AFC Hornchurch | Free agent |
| 2026-06-30 | O. Patrick | Tranmere → Forest Green | Free agent |
| 2026-06-30 | Y. Bamba | Forest Green → Newport County | Transfer |
| 2026-06-30 | T. Babalola | Forest Green → Sutton Utd | - |
| 2026-06-30 | O. Ewing | Scunthorpe → Forest Green | - |
| 2026-06-30 | Bryan Ifeanyi | Carshalton Athletic → Forest Green | Free agent |
| 2026-06-30 | Jesse Aldridge | Forest Green → Hartpury University | Loan |
| 2026-06-30 | J. Berry-McNally | Wycombe → Forest Green | Loan |
| 2026-06-29 | T. Knowles | Forest Green → Barnet | Free agent |
| 2026-06-29 | C. Doidge | Forest Green → Newport County | Free agent |
| 2026-06-29 | H. Bunker | Forest Green → Carlisle | Free agent |
| 2026-06-29 | J. Moore-Taylor | Forest Green → Sutton Utd | Free agent |
| 2026-06-29 | R. Inniss | Forest Green → AFC Hornchurch | Free agent |
| 2026-06-29 | O. Patrick | Tranmere → Forest Green | Free agent |
| 2026-06-29 | H. Isted | Forest Green → Isted Harry | Free agent |
| 2026-06-29 | H. Isted | Forest Green → Altrincham | Free agent |
| 2026-06-22 | C. Harries | Forest Green → Kidderminster Harriers | Loan |
| 2026-05-30 | William Merrett | Alvechurch → Forest Green | Return from loan |
| 2026-05-30 | Abraham Kanu | Forest Green → Reading | Return from loan |
| 2026-05-30 | J. Buyabu | Forest Green → Sheffield Utd | Return from loan |
| 2026-05-30 | C. Nwoko | Forest Green → Fulham | Return from loan |
| 2026-05-30 | A. Ahmed | Forest Green → Reading | Return from loan |
| 2026-05-30 | J. Mingi | Forest Green → Stockport County | Return from loan |
| 2026-05-30 | E. Morrison | Forest Green → Bristol City | Return from loan |
| 2026-03-05 | D. Bughail-Mellor | Macclesfield → Forest Green | - |
| 2026-02-05 | A. Ahmed | Reading → Forest Green | Loan |
| 2026-02-05 | Y. Bamba | Brackley Town → Forest Green | Return from loan |
| 2026-01-31 | T. Campbell | Buxton → Forest Green | Free agent |
| 2026-01-30 | T. Campbell | Buxton → Forest Green | Free agent |
| 2026-01-29 | Isaac Moore | Forest Green → Coventry | Return from loan |
| 2026-01-22 | J. Mingi | Stockport County → Forest Green | Loan |
| 2026-01-12 | E. Morrison | Bristol City → Forest Green | Loan |
| 2026-01-11 | G. Kircough | Penybont → Forest Green | Free agent |
| 2026-01-08 | A. Dausch | Forest Green → Coventry | Return from loan |
| 2026-01-07 | C. Nwoko | Fulham → Forest Green | Loan |
| 2026-01-06 | Harry Whitwell | Forest Green → West Brom | Return from loan |
| 2026-01-05 | J. Balagizi | Forest Green → Liverpool | Return from loan |
| 2026-01-05 | Y. Bamba | Forest Green → Brackley Town | Loan |