| Marijan Sedjak | |
| Fullname: | Marijan Seđak |
| Nationality: | Croatian |
| Birth Date: | 1952 3, df=yes |
| Birth Place: | Bjelovar, SFR Yugoslavia |
| Clubnumber: | 8 |
| Youthyears1: | 1964-1969 |
| Youthclubs1: | RK Partizan Zamet |
| Years1: | 1969-1970 |
| Clubs1: | RK Partizan Zamet |
| Years2: | 1970-1972 |
| Clubs2: | RK Kvarner Rijeka |
| Years3: | 1972-1978 |
| Clubs3: | RK Partizan Zamet |
| Manageryears1: | 1977-1979 |
| Managerclubs1: | RK Partizan Rijeka (Ass) |
| Manageryears2: | 1979-1980 |
| Managerclubs2: | RK Aleksandar Mamić |
| Manageryears3: | 1980-1982 |
| Managerclubs3: | RK Kvarner Rijeka |
| Manageryears4: | 1982-1985 |
| Managerclubs4: | ŽRK Zamet Rijeka |
| Manageryears5: | 1986-1987 |
| Managerclubs5: | RK Zamet Rijeka |
| Manageryears6: | 1989-1992 |
| Managerclubs6: | Spjelkavik Women |
| Manageryears7: | 1990-1991 |
| Managerclubs7: | Bergsøy IL Men |
| Manageryears8: | 1992-2001 |
| Managerclubs8: | Sola HK Women |
| Manageryears9: | 2001-2004 |
| Managerclubs9: | Lunner IL Women |
| Manageryears10: | 2005-2006 |
| Managerclubs10: | Fjellhammer IL |
| Manageryears11: | 2006-2007 |
| Managerclubs11: | Lillestrøm Topphåndball |
| Manageryears12: | 2007-2008 |
| Managerclubs12: | Kolbotn |
| Manageryears13: | 2008-2009 |
| Managerclubs13: | Fjellhammer IL |
| Manageryears14: | 2009-2011 |
| Managerclubs14: | Njårds Ladies (Ass) |
| Manageryears15: | 2011-2013 |
| Managerclubs15: | Raumnes & Årnes Idrettslag |
Marijan Seđak (born 24 March 1952) is a former Croatian handball player and handball coach.[1]
Marijan Seđak grew up in Rijeka and started his handball career in Partizan Zamet. After winning the regional league in his first season he was invited by Vlado Stenzel to join RK Kvarner in the Yugoslav First League.[2]
Wanting to concentrate more on his studies at the time Seđak returned to Partizan Zamet who were then still in the third tier. He played for the club until 1978. In that time the club moved from the third to the first tier. Seđak retired from playing handball but stayed on as assistant coach for one more season.[3]
His first head coaching job was with RK Turnić then called RK Aleksandar Mamić. He then coached RK Kvarner for two seasons. In 1982 he began coaching ŽRK Zamet.[4] In 1987 Seđak coached RK Zamet and led them to the Yugoslav First League.[5]
In 1988 he moved to Norway where he has coached Spjelkavik, Bergsøy IL, Sola HK, Lunner IL. His son Dalibor is also a coach.[6]