Ian Fraser may refer to:
- Ian Fraser, Baron Fraser of Lonsdale (1897–1974), British politician and businessman
- Sir Ian Fraser (surgeon) (1901–1999) Irish surgeon, President of the Royal College of Surgeons in Ireland, President of the British Medical Association
- Ian Fraser (cricketer) (1902–1990), New Zealand cricketer
- Ian Fraser, Baron Fraser of Tullybelton (1911–1989), British judge
- Ian Fraser (Plymouth Sutton MP) (1916–1987), British politician, MP for Plymouth Sutton
- Ian Edward Fraser (1920–2008), British Royal Navy officer and Victoria Cross recipient
- Ian Fraser (Royal Navy pilot) (1921–2015), Royal Navy officer and diplomat
- Ian Fraser (composer) (1933–2014), British composer, nominee for the Academy Award for Original Music Score
- Ian Fraser (broadcaster) (born 1948), New Zealand television interviewer and executive
- Ian Fraser (naturalist) (born 1951), Australian naturalist
- Ian Fraser (New Zealand politician), New Zealand politician, founder of Libertarianz political party
- Ian Fraser (playwright) (born 1962), South African activist and playwright
- Ian Fraser (colonel) (born 1932), producer of large scale military tattoos and events in Canada and overseas