| Matías Fritzler | |
| Fullname: | Matías Lionel Fritzler |
| Height: | 1.79 m |
| Birth Date: | 23 August 1986 |
| Birth Place: | Lomas de Zamora, Buenos Aires, Argentina |
| Youthclubs1: | Lanús |
| Years1: | 2004–2013 |
| Clubs1: | Lanús |
| Caps1: | 150 |
| Goals1: | 8 |
| Years2: | 2010–2011 |
| Clubs2: | → Hércules (loan) |
| Caps2: | 26 |
| Goals2: | 0 |
| Years3: | 2013–2015 |
| Clubs3: | Kasımpaşa |
| Caps3: | 14 |
| Goals3: | 0 |
| Years4: | 2015–2016 |
| Clubs4: | Lanús |
| Caps4: | 26 |
| Goals4: | 0 |
| Years5: | 2016–2017 |
| Clubs5: | Huracán |
| Caps5: | 40 |
| Goals5: | 1 |
| Years6: | 2017–2020 |
| Clubs6: | Colón |
| Caps6: | 56 |
| Goals6: | 2 |
| Years7: | 2020–2021 |
| Clubs7: | Danubio |
| Caps7: | 37 |
| Goals7: | 0 |
| Years8: | 2022 |
| Clubs8: | Agropecuario |
| Caps8: | 34 |
| Goals8: | 0 |
Matías Lionel Fritzler (born 23 August 1986) is an Argentine former professional footballer who played as a midfielder.
Fritzler is of German descent. He started his professional in 2004 with Lanús. He went on to establish himself as an important member of the first team and, in 2007, was part of the squad that won the 2007 Apertura tournament, Lanús' first ever top flight league title.
During the 2010–11 La Liga season, he played on loan for Hércules CF. Subsequently, he returned to Lanús for the 2011–12 Argentine Primera División season.