List of Champions of the 1966 U.S. National Championships (now known as the US Open):
Fred Stolle defeated John Newcombe 4-6 12-10 6-3 6-4
Maria Bueno defeated Nancy Richey Gunter 6-3, 6-1
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| Preceded by 1965 U.S. National Championships |
U.S. National Championships | Succeeded by 1967 U.S. National Championships |
| Preceded by 1966 Wimbledon Championships |
Grand Slams | Succeeded by 1967 Australian Championships |