Ian Nesbit Brennan (born 17 July 1930) is a former New Zealand cricketer.
He played in three first-class matches for Wellington in 1958–59.
[1] A left-handed batsman, Brennan's highest first-class score was 40 in his last match, when he opened the batting and added 104 for the second wicket with Bob Vance in a Plunket Shield match against Otago.
[2] He played Hawke Cup cricket for Hutt Valley from 1948 to 1962 and was a member of the team that won the title in December 1948 and held it until April 1950.
[3] This biographical article related to a New Zealand cricket person born in the 1930s is a stub.