Louis Mathieu may refer to:
- Louis-Mathieu Langlès (1763–1824), a French academic, philologist, linguist, translator, author, librarian and orientalist
- Ludwik Mateusz Dembowski (1768-1812), a Polish general and traveler
- Louis-Mathieu Molé (1781–1855), a French statesman
- Claude-Louis Mathieu (1783–1875), a French astronomer
- Louis Mathieu Verdilhan (1875–1928), a French artist
This disambiguation page lists articles about people with the same name.
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