Ian Johnston
Ian Johnston may refer to:
- Ian Johnston (cricketer), former Irish cricketer
- Ian Johnston (doctor), pioneer of reproductive medicine in Australia
- Ian Johnston (field hockey), Canadian field hockey player
- Ian Johnston (police commissioner), police and crime commissioner for Gwent Police
- Ian Johnston (police officer), former chief constable of British Transport Police
- Ian Johnston (rowing), Australian Olympic rower
- Ian Johnston (rugby league), Australian rugby league footballer
- Ian Johnston (soccer), Australian footballer; see Australia [national soccer team records and statistics]
- Ian C. Johnston, Canadian professor and translator of classical works
- Ian R. Johnston, Australian human factors engineer and road safety advocate
- Ian Lawson Johnston, 2nd Baron Luke, British peer, businessman and philanthropist