Ian Brennan may refer to:
- Ian Brennan (cricketer) (born 1930), New Zealand cricketer
- Ian Brennan (footballer) (born 1953), English former footballer
- Ian Brennan (music producer) (born 1966), American music producer
- Ian Brennan (sculptor) (born 1950), British sculptor
- Ian Brennan (writer) (born 1978), American television writer, actor, producer and director
This disambiguation page lists articles about people with the same name.
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