Harold Johnston
# Harold Johnston

Harold Johnston may refer to:

* Harold Johnston (footballer) (1895–1978), Australian rules footballer
* Harold Whetstone Johnston (1859–1912), American historian known for his writings on ancient Rome
* Harold I. Johnston (1892–1949), American soldier and Medal of Honor recipient
* Harold S. Johnston (1920–2012), American atmospheric chemist and National Medal of Science laureate
