See main article: 1968 US Open (tennis).
John Newcombe and Tony Roche were the defending champions, but lost in the quarterfinals to Clark Graebner and Charlie Pasarell.
Bob Lutz and Stan Smith won the title, defeating Arthur Ashe and Andrés Gimeno in the final, 11 - 9, 6 - 1, 7 - 5.
See also: 1 and 1. 
John Newcombe / Tony Roche (quarterfinals)
See also: 2 and 4. Ken Rosewall / Fred Stolle (third round)
See also: 3 and 3. Roy Emerson / Rod Laver (second round)
See also: 4 and 2. Mal Anderson / 
Dennis Ralston (quarterfinals)
See also: 5 and 3. Tom Okker / Marty Riessen (quarterfinals)
See also: 6 and 4. Bob Lutz / Stan Smith (champions)
See also: 7 and 2. Arthur Ashe / 
Andrés Gimeno (final)
See also: 8 and 1. Clark Graebner / Charlie Pasarell (semifinals)