Arthur August Reinholz (January 27, 1903 – December 29, 1980) was a Major League Baseball third baseman who played for one season.

Reinholz played sandlot ball in Detroit until beginning his professional baseball career in the Virginia State League in 1926.

[2] On August 5, 1928, the Winston-Salem Journal ran an article with a full-page headline reading "Reinholz Is One of Best Prospects Ever Developed in Piedmont Loop."

[3] He entered the game in Cleveland as a substitute for future Hall of Famer Joe Sewell and recorded a hit off Ed Morris of the Boston Red Sox in two plate appearances.

[6] He returned to the Winston-Salem Twins for the 1931 season but suffered an arm injury and was relieved of his duties by the start of June.