John McLachlan

John McLachlan may refer to:


 * John McLachlan (architect) (1843–1893), Scottish architect
 * John McLachlan (bishop) (1826–1893), Scottish Roman Catholic clergyman
 * John McLachlan (composer) (born 1964), Irish composer
 * John McLachlan (politician) (1840–1915), New Zealand Member of Parliament
 * John MacKean McLachlan, British socialist politician