|Birth||26 December 1951, Whangarei, Whangarei District, Northland Region, New Zealand|
Karen Ann Marsh (married name Hadlee; born 26 December 1951) is a former New Zealand international cricketer who played a single match for the New Zealand national side at the 1978 World Cup.
Marsh was born in Whangarei, in New Zealand's North Island, but played her domestic cricket for Canterbury. A pace-bowling all-rounder, her sole One Day International (ODI) appearance for New Zealand came at the 1978 World Cup in India, against England. Coming in sixth in the batting order, she scored 14 runs from 17 balls, but was not called upon to bowl. Marsh was married to Richard Hadlee, also played international cricket for New Zealand (both at Test and ODI level). The pair had two sons together, but later divorced.