New Zealand at the 1968 Summer Olympics was represented by a team of 52 competitors, 47 men and five women, who took part in 26 events across eight sports. Selection of the team for the Games in Mexico City, Mexico, was the responsibility of the New Zealand Olympic and British Commonwealth Games Association. New Zealand's flagbearer at the opening ceremony was Don Oliver. The New Zealand team finished 27th on the medal table, winning a total of three medals, one of which was gold.
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Five cyclists represented New Zealand in 1968.
New Zealand finished the men's field hockey tournament in seventh place.
In 1968, New Zealand entered boats in two of the seven events: men's coxed four and men's eight. The competition was for men only; women would first row at the 1976 Summer Olympics.
Two male shooters represented New Zealand in 1968 with Ian Ballinger winning a bronze medal.