| Gerri Mandagi | |
| Fullname: | Gerri Martin Milliam Mandagi |
| Birth Place: | Tomohon, Indonesia[1] |
| Birth Date: | 12 June 1988 |
| Height: | 1.80 m |
| Position: | Goalkeeper |
| Currentclub: | Persibo Bojonegoro |
| Years1: | 2007–2008 |
| Clubs1: | Persiwa Wamena |
| Caps1: | 4 |
| Goals1: | 0 |
| Years2: | 2008–2009 |
| Clubs2: | PSIR Rembang |
| Caps2: | 15 |
| Goals2: | 0 |
| Years3: | 2009–2010 |
| Clubs3: | Persiwa Wamena |
| Caps3: | 2 |
| Goals3: | 0 |
| Years4: | 2010–2011 |
| Clubs4: | PSS Sleman |
| Caps4: | 13 |
| Goals4: | 0 |
| Years5: | 2012–2014 |
| Clubs5: | Persepam Madura Utama |
| Caps5: | 10 |
| Goals5: | 0 |
| Years6: | 2015 |
| Clubs6: | Persiram Raja Ampat |
| Caps6: | 0 |
| Goals6: | 0 |
| Years7: | 2016–2019 |
| Clubs7: | Mitra Kukar |
| Caps7: | 40 |
| Goals7: | 0 |
| Years8: | 2020–2022 |
| Clubs8: | Persipura Jayapura |
| Caps8: | 1 |
| Goals8: | 0 |
| Years9: | 2022 |
| Clubs9: | PSBS Biak |
| Caps9: | 1 |
| Goals9: | 0 |
| Years10: | 2023 |
| Clubs10: | Bali United |
| Caps10: | 0 |
| Goals10: | 0 |
| Years11: | 2023–2024 |
| Clubs11: | PSBS Biak |
| Caps11: | 1 |
| Goals11: | 0 |
| Years12: | 2024– |
| Clubs12: | Persibo Bojonegoro |
| Caps12: | 0 |
| Goals12: | 0 |
| Pcupdate: | 27 September 2023 (UTC) |
Gerri Martin Milliam Mandagi (born 12 June 1988) is an Indonesian professional footballer who plays as a goalkeeper for Indonesian club Persibo Bojonegoro.
Gerri Mandagi was signed for Mitra Kukar to play in Indonesia Soccer Championship A in 2016. He quickly rose as the team's starting goalkeeper, appearing in 40 matches in four seasons.[2]
Mandagi in 2020 signed for Persipura Jayapura to play in Liga 1 in the 2020 season. This season was suspended on 27 March 2020 due to the COVID-19 pandemic. The season was abandoned and was declared void on 20 January 2021.[3] Mandagi made his league debut on 28 August 2021 in a match against Persita Tangerang at the Pakansari Stadium, Cibinong.[4]
PSBS Biak