Robert Wallace Johnson (March 4, 1936 – November 12, 2019), nicknamed "Rocky", was an American professional baseball player.

Largely a utility infielder and pinch hitter, Johnson appeared in 11 Major League Baseball seasons, from 1960 through 1970, for seven clubs, including the 1966 World Series champion Baltimore Orioles.

Johnson's 11-season MLB career began with the Kansas City Athletics and ended with the same franchise, when it was based in Oakland.

Three years later, in 1967, Johnson collected 13 pinch hits in 34 at-bats in a season split between the Orioles and the National League's New York Mets.

[2] Although Johnson's career batting average was only .272, he twice hit over .340 as a part-time player, for the 1967 Mets (.348) and the 1969 Athletics (.343).