| Fred Viancos | |
| Birth Date: | 16 July 1962 |
| Birth Place: | Santiago, Chile |
| Height: | 6 ft 1 in |
| Highestsinglesranking: | No. 659 (June 13, 1988) |
| Australianopenresult: | Q2 (1989) |
| Doublesrecord: | 4–6 |
| Highestdoublesranking: | No. 252 (May 15, 1989) |
| Australianopendoublesresult: | 1R (1989) |
Fred Viancos (born July 16, 1962) is an American former professional tennis player.
Viancos, born in Chile, was a collegiate tennis player for Texas Christian University. He turned professional after college in 1985 and was an early doubles partner of Jim Courier.[1] In 1989 he featured in the men's doubles main draw of the Australian Open.[2] He now serves as the chief operating officer of the United States Professional Tennis Association.[3]