Walther Hermann Richard Horn (19 October 1871 – 10 July 1939) was a German entomologist who specialised in beetles (Coleoptera). He was born in Berlin, where he also died. He is not to be confused with the American entomologist George Henry Horn, another entomologist that studied Coleoptera.
Walther Horn was first a physician then Director of the German Entomological Institute.
1903. Zur Kenntnis der paläarktischen Cicindelen. Münchener koleopterologische Zeitschrift, 1(4):337-346.
1908. Coleoptera Adephaga. Fam. Carabidae Subfam. Cicindelinae. in: Wytsman P.(ed.), Genera Insectorum. Fascicule 82A. P. Wytsman, Brussels, pp. 1–104, pls. 1–5.
1910. Coleoptera Adephaga. Fam. Carabidae Subfam. Cicindelinae. in: P. Wytsman (ed.), Genera Insectorum. Fascicule 82B. P. Wytsman, Brussels, pp. 105–208, pls. 6–15.
1915. Coleoptera Adephaga. Fam. Carabidae Subfam. Cicindelinae. in: P.Wytsman (ed.), Genera Insectorum. Fascicule 82C. P. Wytsman, Brussels, pp.209–486, pls. 16–23.
1926. Pars 86. Carabidae: Cicindelinae. IN: S. Schenkling (ed.), Coleopterorum Catalogus. W. Junk, Berlin, 345 pp.
1928-1929.With Sigmund Schenkling Index Litteratuae Entomologicae Horn, Berlin-Dahlem. A bibliography of entomology,covering the early printed works on entomology through to 1900 and describing over 25,000 printed items.
Horn's collection World Cicindelidae including larvae Larven and general Coleoptera collections (North Africa (1896), Ceylon (1899), North and South America (1902) and Persian Gulf (1926) are conserved in the German Entomological Institute.
