The catalogue of all known World species of the genus Gonocephalum Solier, 1834 is presented: 3 subgenera, 415 species and subspecies are listed. The data of primary types and distribution for known species and subspecies are included. Gonocephalum zoltani nom. nov. is proposed as replacement name for Gonocephalum parallelum Kaszab, 1952 (nec Gonocephalum setulosum var. parallelum Normand, 1936) which is junior homonym; Gonocephalum neoblairi nom. nov. is proposed as replacement name for Gonocephalum Blairi Kaszab, 1952 (nec Opatrum blairi Gebien, 1922, presently placed in Gonocephalum) which is junior homonym. The following new homonyms are presented for the species presently placed in Gonocephalum: Hopatrum arenarium Fairmaire, 1894 nom. preoccup., nec Opatrum arenarium Fabricius, 1775; Gonocephalum curvicolle Gridelli, 1934 nom. preoccup., nec Gonocephalum curvicolle Reitter, 1889; Gonocephalum pubens Gebien, 1913 nom. preoccup., nec Opatrum pubens Marseul, 1876; Opatrum pusillum Küster, 1849 nom. preoccup., nec Opatrum pusillum Fabricius, 1791; Opatrum viennense Küster, 1849 nom. preoccup., nec Gonocephalum viennense Duftschmid, 1812; Opatrum modestum Küster, 1849 name preoccup. nec Opatrum modestum Reiche, 1847; Opatrum patruele Küster, 1849 nom. preoccup. nec Opatrum patruele Erichson, 1843; Opatrum setulosum Küster, 1849 nom. preoccup., nec Opatrum setulosum Faldermann, 1837. Incertae sedis taxa are listed separately.