Johan Harmen Rudolf Köhler (Groningen, July 3, 1818 - Aceh, April 14, 1873) was a Dutch general who commanded the Dutch-Indonesian forces during the First expedition to Aceh (northern tip of island Sumatra, today's Indonesia) started on April 8, 1873. The expedition failed to reach its goals and Köhler himself was shot in a skirmish. His tombstone can still be found in a cemetery in Jakarta now known as Taman Prasasti Museum.