Ian Robertson may refer to:
- Ian Robertson (Australian rules footballer) (born 1946), football commentator and former Australian rules footballer
- Ian Robertson, Lord Robertson (1912–2005), Senator of the College of Justice in Scotland, 1966-88
- Ian Robertson (Gaelic footballer), former Dublin player
- Ian Robertson (rugby commentator) (born 1945), BBC rugby commentator
- Major-General Ian Argyll Robertson of Brackla (1913–2010)
- Ian Robertson (rugby union) (born 1951), rugby union player who represented Australia
- Ian Robertson (footballer) (born 1966), Scottish former football player
- Ian Robertson (businessman) (born 1958), automotive executive working for the BMW Group
- Ian Robertson (admiral) (1922-2012)
- Ian Robertson (Professor of Psychology) (born 1951), professor of psychology at Trinity College, Dublin