Robert Lee Oliver (February 8, 1943 – April 19, 2020) was an American professional baseball first baseman and outfielder, who played in Major League Baseball (MLB) for the Pittsburgh Pirates (1965), Kansas City Royals (1969–72), California Angels (1972–74), Baltimore Orioles (1974), and New York Yankees (1975).

Oliver was traded to the Minnesota Twins and spent two more seasons in Minor League Baseball (MiLB).

Oliver made the big leagues for good in 1969, having been selected by the Kansas City Royals in the previous October's expansion draft.

Playing on a young team that included fellow rookies Pat Kelly and Lou Piniella — the eventual American League (AL) Rookie of the Year — Oliver batted .254, with 13 home runs, and 43 runs batted in (RBI), in 118 games played.

[citation needed] Oliver died on April 19, 2020, at the age of 77, in Rio Linda, California.