| Mattia Trianni | |
| Birth Date: | 1993 1, df=yes |
| Birth Place: | Heilbronn, Germany |
| Height: | 1.82 m |
| Position: | Winger |
| Youthclubs1: | VfL Neckargartach |
| Youthclubs2: | Union Böckingen |
| Youthclubs3: | Heilbronner SpVgg |
| Youthclubs4: | FC Heilbronn |
| Youthclubs5: | VfB Stuttgart |
| Youthclubs6: | 1899 Hoffenheim |
| Youthclubs7: | Stuttgarter Kickers |
| Years1: | 2012–2013 |
| Clubs1: | 1. CfR Pforzheim |
| Years2: | 2013–2014 |
| Clubs2: | 1. FC Bruchsal |
| Years3: | 2014–2015 |
| Clubs3: | Schwarz-Weiß Rehden |
| Caps3: | 16 |
| Goals3: | 2 |
| Years4: | 2015 |
| Clubs4: | TSG Neustrelitz |
| Caps4: | 9 |
| Goals4: | 3 |
| Years5: | 2015 |
| Clubs5: | TSG Neustrelitz II |
| Caps5: | 1 |
| Goals5: | 0 |
| Years6: | 2015–2017 |
| Clubs6: | Viktoria Berlin |
| Caps6: | 48 |
| Goals6: | 12 |
| Years7: | 2017–2019 |
| Clubs7: | VfR Aalen |
| Caps7: | 33 |
| Goals7: | 1 |
| Years8: | 2019 |
| Clubs8: | Reno 1868 |
| Caps8: | 1 |
| Goals8: | 0 |
| Years9: | 2020 |
| Clubs9: | SV Babelsberg 03 |
| Caps9: | 3 |
| Goals9: | 0 |
| Years10: | 2021–2023 |
| Clubs10: | Atlas Delmenhorst |
| Caps10: | 54 |
| Goals10: | 14 |
| Years11: | 2023– |
| Clubs11: | SSV Reutlingen |
| Caps11: | 30 |
| Goals11: | 4 |
| Club-Update: | 02:46, 4 July 2024 (UTC) |
Mattia Trianni (born 16 January 1993) is a German footballer who most recently played as a winger for SSV Reutlingen.