Orlando Martínez Oliva (August 23, 1941 – March 8, 2007) was a Cuban utility player, manager, coach and scout in Major League Baseball.

Signed by the Washington Senators as an amateur free agent in 1960, Martínez reached the majors in 1962 with the Minnesota Twins, spending one year with them before moving to the Atlanta Braves (1967–1968), Houston Astros (1969–1971), St. Louis Cardinals (1972), Oakland Athletics (1972) and Texas Rangers (1972).

In all or part of seven seasons, Martínez was a .243 hitter with 57 RBI and 97 runs in 436 games, including 230 hits, 19 doubles, 11 triples and seven stolen bases.

Following his major league career, Martínez played and managed for the Tulsa Drillers, Texas Rangers Double-A affiliate.

As a Mariners instructor, he nurtured and molded a whole generations of Seattle infielders, including the aforementioned Vizquel and Martínez, as well as Harold Reynolds and Spike Owen.