| Diethelm Ferner | |
| Birth Date: | 13 July 1941 |
| Birth Place: | Kragau, Germany |
| Height: | 1.68 m |
| Position: | Midfielder |
| Years1: | 1962–1963 |
| Clubs1: | VfB Bottrop |
| Years2: | 1963–1969 |
| Clubs2: | Werder Bremen |
| Caps2: | 181 |
| Goals2: | 20 |
| Years3: | 1969–1974 |
| Clubs3: | Rot-Weiss Essen |
| Caps3: | 51 |
| Goals3: | 1 |
| Nationalyears1: | 1963–1964 |
| Nationalteam1: | West Germany |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
| Manageryears1: | 1973–1975 |
| Managerclubs1: | Rot-Weiss Essen |
| Manageryears2: | 1975–1976 |
| Managerclubs2: | Wuppertaler SV |
| Manageryears3: | 1976–1978 |
| Managerclubs3: | FC St. Pauli |
| Manageryears4: | 1978–1979 |
| Managerclubs4: | Rot-Weiss Essen |
| Manageryears5: | 1979–1982 |
| Managerclubs5: | Hannover 96 |
| Manageryears6: | 1983–1986 |
| Managerclubs6: | Schalke 04 |
| Manageryears7: | 1986–1987 |
| Managerclubs7: | Iraklis |
| Manageryears8: | 1987 |
| Managerclubs8: | Alemannia Aachen |
| Manageryears9: | 1988–1989 |
| Managerclubs9: | Schalke 04 |
| Manageryears10: | 1990–1994 |
| Managerclubs10: | Apollon Limassol |
| Manageryears11: | 1995–1996 |
| Managerclubs11: | AEL Limassol |
| Manageryears12: | 1996–1997 |
| Managerclubs12: | Zamalek |
| Manageryears13: | 1997–1998 |
| Managerclubs13: | Al-Jahra |
| Manageryears14: | 1998 |
| Managerclubs14: | Lebanon |
| Manageryears15: | 1999–2000 |
| Managerclubs15: | Apollon Limassol |
| Manageryears16: | 2000–2002 |
| Managerclubs16: | El-Ittihad El-Iskandary |
| Manageryears17: | 2003–2004 |
| Managerclubs17: | Al-Merreikh Al-Thagher |
| Manageryears18: | 2005–2006 |
| Managerclubs18: | Olympiakos Nicosia |
| Manageryears19: | 2008 |
| Managerclubs19: | Al Ahli Tripoli |
| Manageryears20: | 2013 |
| Managerclubs20: | Kavala |
Diethelm Ferner (13 July 1941 – 7 November 2023) was a German football coach and player.[1] As a player, he spent eight seasons in the Bundesliga with Werder Bremen and Rot-Weiss Essen, winning the 1964–65 Bundesliga with Werder Bremen.[2] He represented West Germany in two friendlies.
As a coach Ferner helped FC St. Pauli to its first promotion to the Bundesliga.[3]
Ferner died on 7 November 2023, at the age of 82.[4]
Werder Bremen
Apollon Limassol
Zamalek