Heinrich Hermann Robert Hartmeyer (born May 19, 1874 in Hamburg – died on October 13, 1923 in Freiburg im Breisgau) was a German zoologist.
From 1892 he studied medicine and biology at the University of Bonn; from 1895 he studied at the University of Leipzig with Rudolf Leuckart and at the University of Breslau (now Wroclaw in Poland) with Willy Kükenthal. In 1898 he received his PhD at Breslau.
In 1899, he conducted marine zoological studies in Messina, at Stazione Zoologica in Naples and in Rovinj. In 1900, he became a research assistant. From 1908, he was curator at the Zoological Museum of the University of Berlin.
Since 1894, he was a member of the Corps Palatia Bonn.
1893 - H. G. Bronns Klassen und Ordnungen des Tierreichs: Bd. 3. Mollusca. Supplement. Tunicata (Manteltiere).. Die Appendicularien und Ascidien / begonnen von Osw. Seeliger, fortges. von R. Hartmeyer, Part 1 by Heinrich G. Bronn, Oswald Seeliger, Robert Hartmeyer and G. Neumann - 1773 pages1899 - Conspectus faunæ groenlandicæ: Pars [prima] [tertia] by Hjalmar Ditlevsen, Tage Ulrich Holten Ellinger and Robert Hartmeyer1899 - Die Monascidien der Bremer Expedition nach Ostspitzbergen im Jahre 1889 by Robert Hartmeyer - 70 pages1899 - Papers on tunicates by Robert Hartmeyer1900 - Memoirs on ascidians by Robert Hartmeyer1900 - Monascidien von ternate by Robert Hartmeyer - 12 pages1900 - Nachtrag zu Monascidien von Ternate by Robert Hartmeyer - 242 pages1901 - Holosome Ascidien (Ascidiacea holosomata). by Robert Hartmeyer1903 - Die Ascidien der Deutschen Sudpolar-Expedition, 1901-1903 by Robert Hartmeyer - 200 pages1907 - Die Fauna Sudwest-Australiens, Ergebnisse der hamburger sud-west-australischen Forschungsreise 1905, herausgegeben von Dr. W. Michaelsen und Dr. R. Hartmeyer, Volume 1 by Wilhelm Michaelsen and Robert Hartmeyer1908 - Die Fauna Sudwest-Australiens V1: Ergebnisse Der Hamburger Sudwest-Australischen Forschungsreise 1905 (1908) by Johann Wilhelm Michaelson and Robert Hartmeyer1909 - Blattidae by Robert Shelford, Wilhelm Michaelson, Robert Hartmeyer - 142 pages1909 - Die westindischen Korallenriffe und ihr Tierleben by Robert Hartmeyer - 40 pages1909 - Mollusca, Nemertini, Bryozoa, Turbellaria, Tricladida, Spongillidae, Hydrozoa by Johannes Thiele, Robert Hartmeyer and Ludwig von Graff - 199 pages1909 - Nematodes, Mermithidae, Gordiidae by Leonard A. Jägerskiöld, V. Linstow and Robert Hartmeyer - 92 pages1910 - The terrestrial mammals and birds of north-east Greenland: biological observations by A. L. V. Manniche, Frits Johansen and Robert Hartmeyer - 236 pages1911 - Die Ascidien der deutschen Südpolar-Expedition 1901-1903: mit Taf. 45-57 by Robert Hartmeyer - 199 pages1911 - Die Appendicularien und Ascidien by Oswald Seeliger, Heinrich Georg Bronn and Robert Hartmeyer - 952 pages1911 - Die Fauna südwest-Australiens: Ergebnisse der Hamburger südwest-australischen Forschungsreise 1905, Volume 1 by Deutsche Südpolar-Expedition, Robert Hartmeyer - 199 pages1911 - Polycitor (Eudistoma) mayeri nov. sp., from the Tortugas by Robert Hartmeyer - 5 pages1912 - Die Ascidien der Deutschen Tiefsee-Expedition by Robert Hartmeyer - 170 pages1912 - Die ascidien der Danmark expedition by Robert Hartmeyer - 236 pages1913 - Abt. II,1 by Oswald Seeliger, Heinrich Georg Bronn and Robert Hartmeyer - 182 pages1913 - Revision von Heller's Ascidien aus der Adria II. Die Arten der Gattungen Microcosmus, Cynthia, Styela, Polycarpa, Gymnocystis und Molgula by Robert Hartmeyer - 37 pages1914 - Ascidier by Robert Hartmeyer - 1117 pages1915 - Alder und Hancocks Britische Tunicaten: eine Revision by Robert Hartmeyer - 39 pages1915 - Results of a biological survey of Blacksod Bay, Co. Mayo by M. C. Knowles and R. Hartmeyer - 72 pages1916 - Berichtigung zu: Clark, A. H., The Crinoids of the Museum für Naturkunde, Berlin by Robert Hartmeyer - 4 pages1919 - Ascidien by Robert Hartmeyer - 150 pages1919 - Ascidien aus dem Barentsmeer by Robert Hartmeyer1919 - Results of Dr. E. Mjöbergs Swedish Scientific Expeditions to Australia 1910-13: Ascidien by Robert Hartmeyer - 150 pages1921 - Studien an westgrönländischen Ascidien: (Ergebisse der Einsammlungen von Dr. V. Nordmann in Nordre Strømfjord, Sommer 1911 und Dr. K. Stephensen in Kvarnefjord, Bredefjord und Skovfjord, Sommer 1912) by Robert Hartmeyer - 137 pages1922 - Die Ascidienfauna des Trondhjemfjords by Robert Hartmeyer - 47 pages1924 - Ascidiacae: Part 2 by Robert Hartmeyer - 275 pages1924 - Ascidiacea: zugleich eine Übersicht über die arktische und boreale Ascidienfauna auf tiergeographischer Grundlage by Robert Hartmeyer - 640 pages1929 - Ergebnisse einer zoologischen Forschungsreise nach Westindien im Jahre 1907: ..., Volume 1 by Willy Kükenthal, Robert Hartmeyer - 234 pagesDie Ascidien der Arktis by Robert Hartmeyer - 320 pagesEtwas über schreibungen von gattungsnamen by Robert HartmeyerMiscellanea ascidiologica by Robert HartmeyerNeue und alte styeliden aus der sammlung des Berliner museums by Robert HartmeyerNomenclator animalium generum et subgenerumZur kenntnis phlebobranchiater und diktyobranchiater ascidien by Robert Hartmeyer and Wilhelm Michaelsen. 