Ramanathan Krishnan
Ramanathan Krishnan (born 11 April 1937) is a retired tennis player from India who was among the world's leading players in the 1950s and 1960s. He was twice a semifinalist at Wimbledon in 1960 and 1961, reaching as high as World No. 3 in Potter's amateur rankings.
- 1965 – River Oaks International Tennis Championships champion – defeated Osuna, Emerson in four sets, and Richey in four sets
- 1966 – member of the Indian team which reached the final of the Davis Cup (lost to Australia in the final)
- 1967 – Antwerp International champion – defeated Emerson in final in three straight sets
- 1968 – Canadian Open champion – defeated Torben Ulrich in final