Rudolf von Willemoes-Suhm (September 11, 1847 – September 13, 1875) was a German naturalist who served aboard the Challenger expedition. Willemoes-Suhm was born in Glückstadt, Schleswig-Holstein. After starting to study law at the University of Bonn, Willemoes-Suhm left Bonn to study zoology at Munich under Professor Karl von Siebold. Beginning in April 1869, he studied at the University of Göttingen, and gained his doctorate there. In 1870, he moved to Kiel, where he met Professor Karl von Kupffer, and there he collected specimens in the Bay of Kiel, which he analysed for his habilitation. In 1871, Willemoes-Suhm began to lecture at the University of Munich. In 1872, he was on board the with the , and described the vertebrates and polychaetes of the Faroe Islands. The Phønix docked in Le