Ronald John Johnston, OBE, FAcSS, FBA (born 30 March 1941 in Swindon, England) is a British human geographer, known for elaborating his discipline's foundations, particularly its history and nature, and for his contributions to urban social geography and electoral geography.
His broad scope is illustrated by the fact that he makes extensive use of quantitative methods, while critically dealing with subjects of social and political relevance.
Johnston also is an unusually productive author: As of December 2009, he has authored or co-authored more than 50 books and 800 papers, and edited or co-edited a further more than 40 books (if translated and revised editions are counted separately).
Among the books he has edited is The Dictionary of Human Geography, the first four editions of which as main editor.