| Mathieu Grosch | |
| Office: | Speaker of Parliament of the German Community |
| Term Start: | 13 November 1990 |
| Term End: | 1 August 1994 |
| Predecessor: | Kurt Ortmann |
| Successor: | Manfred Schunck |
| Birth Date: | 15 September 1950 |
| Birth Place: | Eupen, Belgium |
| Party: | Christian Social Party |
| Alma Mater: | University of Liège |
Mathieu Jean Hubert Grosch (born 14 September 1950, in Eupen) is a Belgian politician and Member of the European Parliament for the German-speaking Community of Belgium with the CSP-EVP, Member of the Bureau of the European People's Party and sits on the European Parliament's Committee on Transport and Tourism.
He is a substitute for the Committee on Regional Development, a member of the Delegation to the EU-Mexico Joint Parliamentary Committee and a substitute for the Delegation for relations with Japan.