New Zealand at the 1964 Summer Olympics was represented by a team of 64 competitors, 56 men and eight women, who took part in 35 events across 11 sports.

[1] Selection of the team for the Games in Tokyo, Japan, was the responsibility of the New Zealand Olympic and British Empire Games Association.

New Zealand's flagbearer at the opening ceremony was Peter Snell.

None of the New Zealand gymnasts qualified for any of the apparatus finals.

[5] The competition was for men only; women would first row at the 1976 Summer Olympics.