Martín Casimiro Martínez Fagalde, usually known as Martín C.
Martínez (22 February 1859 - 21 January 1946) was a Uruguayan lawyer and politician.
He took part in the Constituent Assembly that drafted the Uruguayan Constitution of 1918.
Soon afterwards he was a member in the National Council of Administration (1919-1921).
He was successively member of three parties: Constitutional Party, National Party and Independent National Party.