Iona Brown, OBE (7 January 1941 – 5 June 2004) was a British violinist and conductor.

Elizabeth Iona Brown was born in Salisbury and attended Salisbury Cathedral School. Her parents, Antony and Fiona, were both musicians. Her brother Timothy is principal horn of the BBC Symphony Orchestra, her other brother Ian is a pianist and her sister Sally plays viola in the Bournemouth Symphony Orchestra.