Duncan Ritchie is a former football (soccer) player who represented New Zealand at international level. Ritchie played two official A-international matches for the All Whites in 1962 against visitors New Caledonia, the first a 4–1 on 2 June 1962, his second a 4–2 win on 4 June. They were to be his only official matches as New Zealand played no other official matches until 1967.