Robert Johnstone

Robert Johnstone may refer to:
 * Robert Maxwell Johnstone (1914–1990), senior British Army officer
 * Robert Arthur Johnstone (1843–1905), officer in the Native Police paramilitary force
 * Robert James Johnstone (1872–1938), Northern Ireland physician and politician
 * Robert William Johnstone (1879–1969), Scottish surgeon
 * Bobby Johnstone (1929–2001), Scottish footballer (Hibernian, Manchester City, Oldham Athletic, national team)
 * Bobby Johnstone (1960s footballer) (fl. 1958–1969), Scottish footballer (Stirling Albion, Airdrieonians, Dumbarton)
 * Bobby Johnstone (footballer, born 1918) (1918–2007), Scottish footballer (Tranmere Rovers)
 * Bob Johnstone (Australian footballer) (1942–2001), Australian footballer (Collingwood)
 * Bob Johnstone (broadcaster) (?–2012), Canadian broadcaster
 * Bob Johnstone (goalkeeper) (fl. 1930s), Scottish footballer (Partick Thistle)
 * Bob Johnstone (Scottish footballer) (fl. 1890s), Scottish footballer
 * Bob Johnstone (singer) (1916–1994), American traditional pop music singer