| Personal information | |||
|---|---|---|---|
| Full name | Gerri Martin Milliam Mandagi | ||
| Date of birth | 12 June 1983 | ||
| Place of birth | Tomohon, Indonesia | ||
| Height | 1.80 m (5 ft 11 in) | ||
| Position | Goalkeeper | ||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| 2007–2008 | Persiwa Wamena | 4 | (0) |
| 2008–2009 | PSIR Rembang | 15 | (0) |
| 2009–2010 | Persiwa Wamena | 2 | (0) |
| 2010–2011 | PSS Sleman | 13 | (0) |
| 2012–2014 | Persepam Madura Utama | 10 | (0) |
| 2015 | Persiram Raja Ampat | 0 | (0) |
| 2016–2019 | Mitra Kukar | 40 | (0) |
| 2020–2022 | Persipura Jayapura | 1 | (0) |
| 2022 | PSBS Biak | 1 | (0) |
| 2023 | Bali United | 0 | (0) |
| 2023–2024 | PSBS Biak | 1 | (0) |
| 2024–2025 | Persibo Bojonegoro | 13 | (0) |
| 2025–2026 | Sriwijaya | 3 | (0) |
| * Club domestic league appearances and goals as of 11 November 2025 (UTC) | |||
Gerri Martin Milliam Mandagi (born 12 June 1983) is an Indonesian professional footballer who plays as a goalkeeper.
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.
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. Mandagi made his league debut on 28 August 2021 in a match against Persita Tangerang at the Pakansari Stadium, Cibinong.
PSBS Biak