Joseph Arnold (28 December 1782 – 26 July 1818 in Padang, Sumatra, Netherlands East Indies) was a naval surgeon and naturalist. He was the first to bring to notice to English botany, the parasitic plant with one of the world's largest flowers, Rafflesia arnoldii, which was named after him posthumously. His specimen collection is in the museum of the Linnean Society. The memorial includes the inscription (with errors in the dates):