Josias Cornelis Rappard (24 April 1824, Nijmegen – 17 May 1898, Leiden) was a Dutch soldier and artist.
He spent time in the Dutch East Indies (Indonesia) and made artworks there.
In 1851 he married in Batavia to Cornelia Nicolina Tromp (1831–1893), they had eight children.
Rappard was a colonel in the infantry of the Royal Netherlands East Indies Army.
He produced many paintings and drawings of life in Dutch East Indies.