Simon Binnendijk (26 March 1821, Leiden – 28 October 1883, Buitenzorg) was a Dutch gardener and botanist. He received botanical training under Willem Hendrik de Vriese (1806–1862) in Leiden. From 1850 to 1869 he was assistant curator at the Botanical Garden of Buitenzorg in the Dutch East Indies, afterwards serving as curator of the gardens. During his tenure in the East Indies, he participated on a botanical expedition to the Moluccas. The standard author abbreviation Binn. is used to indicate this person as the author when citing a botanical name.