Abner Charles Powell (December 15, 1860 – August 7, 1953) was an American Major League Baseball player who was a member of the Washington Nationals of the Union Association in 1884.

Powell is credited with various innovations that changed baseball, though in many cases this is incorrect or overstated.

[1] He is incorrectly credited with inventing rain checks and "ladies' day," but both of these were in use in New Orleans before Powell.

[2][3] The idea of Ladies Day was to create an environment in the stands that would be free of unsavory characters and conduct, as well as to make baseball a family-oriented event; it dates at least to 1880 in New Orleans.

[4] Powell is also credited with using an infield tarpaulin so that fields could be ready immediately after rain storms.