Cesar or Caesar Martinez may refer to:
- César Martínez (artist) (born 1944), Chicano artist
- César Martínez (footballer, born 1986), Paraguayan football midfielder
- César Martínez (footballer, born 1995), Mexican football midfielder
- César Martínez, a character in Mujeres engañadas
- Caesar Martinez (The Walking Dead), a character in The Walking Dead