U.S. National Indoor Professional Championships

The U.S. National Indoor Professional Championships also known as the U.S. Pro Indoor was a men's professional wood court indoor tennis tournament founded in 1931. It was first played the Penn Athletic Club, in Philadelphia, United States.

History
The U.S. National Professional Indoor Championships was a men's tennis tournament sanctioned by the United States Professional Lawn Tennis Association (USPLTA),and first held in May 1931, and was first played on indoor wood courts at the Penn Athletic Club, Philadelphia, United States. In 1932 the second edition was also played at the 71st Regiment Armory in New York City. In 1933 the tournament was held again at the Penn Athletic in Philadelphia. In 1964 the tournament was held in White Plains, New York. In 1965 in what would be the final edition it was again played at the 34th St Armory then was discontinued.

Men's singles
(Incomplete roll)

Men's doubles
(Incomplete roll)