1905 U.S. National Championships (tennis)
The 1905 U.S. National Championships tennis tournament was a tennis tournament that took place in June and August of 1905. The women's tournament was held from June 20 to June 24 on the outdoor grass courts at the Philadelphia Cricket Club in Philadelphia, Pennsylvania. The men's tournament was held from August 22 to August 31 on the outdoor grass courts at the Newport Casino in Newport, Rhode Island. It was the 25th U.S. National Championships and the second Grand Slam tournament of the year.