Cyclosa es un género de arañas araneomorfas de la familia Araneidae. Se encuentra en todos los continentes.

Según The World Spider Catalog 12.0: - Cyclosa alayoni Levi, 1999 - Cyclosa alba Tanikawa, 1992 - Cyclosa albisternis Simon, 1888 - Cyclosa albopunctata Kulczyn'ski, 1901 - Cyclosa algerica Simon, 1885 - Cyclosa andinas Levi, 1999 - Cyclosa angusta Tanikawa, 1992 - Cyclosa argentata Tanikawa & Ono, 1993 - Cyclosa argenteoalba Bösenberg & Strand, 1906 - Cyclosa atrata Bösenberg & Strand, 1906 - Cyclosa baakea Barrion & Litsinger, 1995 - Cyclosa bacilliformis Simon, 1908 - Cyclosa baloghi Kolosváry, 1934 - Cyclosa banawensis Barrion & Litsinger, 1995 - Cyclosa berlandi Levi, 1999 - Cyclosa bianchoria Yin, Wang, Xie & Peng, 1990 - Cyclosa bifida (Doleschall, 1859) - Cyclosa bifurcata (Walckenaer, 1842) - Cyclosa bihamata Zhang, Zhang & Zhu, 2010 - Cyclosa bituberculata Biswas & Raychaudhuri, 1998 - Cyclosa bulleri (Thorell, 1881) - Cyclosa cajamarca Levi, 1999 - Cyclosa caligata (Thorell, 1890) - Cyclosa camargoi Levi, 1999 - Cyclosa camelodes (Thorell, 1878) - Cyclosa caroli (Hentz, 1850) - Cyclosa centrifaciens Hingston, 1927 - Cyclosa centrodes (Thorell, 1887) - Cyclosa cephalodina Song & Liu, 1996 - Cyclosa chichawatniensis Mukhtar & Mushtaq, 2005 - Cyclosa circumlucens Simon, 1907 - Cyclosa concolor Caporiacco, 1933 - Cyclosa confraga (Thorell, 1892) - Cyclosa confusa Bösenberg & Strand, 1906 - Cyclosa conica (Pallas, 1772) - Cyclosa conigera F. O. Pickard-Cambridge, 1904 - Cyclosa coylei Levi, 1999 - Cyclosa cucurbitoria (Yin, Wang, Xie & Peng, 1990) - Cyclosa cucurbitula Simon, 1900 - Cyclosa curiraba Levi, 1999 - Cyclosa cylindrata Yin, Zhu & Wang, 1995 - Cyclosa cylindrifaciens Hingston, 1927 - Cyclosa damingensis Xie, Yin & Kim, 1995 - Cyclosa deserticola Levy, 1998 - Cyclosa dianasilvae Levi, 1999 - Cyclosa diversa (O. Pickard-Cambridge, 1894) - Cyclosa dives Simon, 1877 - Cyclosa donking Levi, 1999 - Cyclosa dosbukolea Barrion & Litsinger, 1995 - Cyclosa durango Levi, 1999 - Cyclosa elongata Biswas & Raychaudhuri, 1998 - Cyclosa espumoso Levi, 1999 - Cyclosa fililineata Hingston, 1932 - Cyclosa formosa Karsch, 1879 - Cyclosa formosana Tanikawa & Ono, 1993 - Cyclosa fuliginata (L. Koch, 1872) - Cyclosa ginnaga Yaginuma, 1959 - Cyclosa groppalii Pesarini, 1998 - Cyclosa gulinensis Xie, Yin & Kim, 1995 - Cyclosa haiti Levi, 1999 - Cyclosa hamulata Tanikawa, 1992 - Cyclosa hexatuberculata Tikader, 1982 - Cyclosa hova Strand, 1907 - Cyclosa huila Levi, 1999 - Cyclosa imias Levi, 1999 - Cyclosa inca Levi, 1999 - Cyclosa informis Yin, Zhu & Wang, 1995 - Cyclosa insulana (Costa, 1834) - Cyclosa ipilea Barrion & Litsinger, 1995 - Cyclosa jalapa Levi, 1999 - Cyclosa japonica Bösenberg & Strand, 1906 - Cyclosa jose Levi, 1999 - Cyclosa kashmirica Caporiacco, 1934 - Cyclosa kibonotensis Tullgren, 1910 - Cyclosa koi Tanikawa & Ono, 1993 - Cyclosa krusa Barrion & Litsinger, 1995 - Cyclosa kumadai Tanikawa, 1992 - Cyclosa laticauda Bösenberg & Strand, 1906 - Cyclosa lawrencei Caporiacco, 1949 - Cyclosa libertad Levi, 1999 - Cyclosa litoralis (L. Koch, 1867) - Cyclosa longicauda (Taczanowski, 1878) - Cyclosa machadinho Levi, 1999 - Cyclosa maderiana Kulczyn'ski, 1899 - Cyclosa maritima Tanikawa, 1992 - Cyclosa mavaca Levi, 1999 - Cyclosa meruensis Tullgren, 1910 - Cyclosa micula (Thorell, 1892) - Cyclosa minora Yin, Zhu & Wang, 1995 - Cyclosa mocoa Levi, 1999 - Cyclosa mohini Dyal, 1935 - Cyclosa monteverde Levi, 1999 - Cyclosa monticola Bösenberg & Strand, 1906 - Cyclosa moonduensis Tikader, 1963 - Cyclosa morretes Levi, 1999 - Cyclosa mulmeinensis (Thorell, 1887) - Cyclosa neilensis Tikader, 1977 - Cyclosa nevada Levi, 1999 - Cyclosa nigra Yin, Wang, Xie & Peng, 1990 - Cyclosa nodosa (O. Pickard-Cambridge, 1889) - Cyclosa norihisai Tanikawa, 1992 - Cyclosa oatesi (Thorell, 1892) - Cyclosa octotuberculata Karsch, 1879 - Cyclosa oculata (Walckenaer, 1802) - Cyclosa ojeda Levi, 1999 - Cyclosa okumae Tanikawa, 1992 - Cyclosa olivenca Levi, 1999 - Cyclosa olorina Simon, 1900 - Cyclosa omonaga Tanikawa, 1992 - Cyclosa onoi Tanikawa, 1992 - Cyclosa oseret Levi, 1999 - Cyclosa otsomarka Barrion & Litsinger, 1995 - Cyclosa pantanal Levi, 1999 - Cyclosa parangmulmeinensis Barrion & Litsinger, 1995 - Cyclosa parangtarugoa Barrion & Litsinger, 1995 - Cyclosa paupercula Simon, 1893 - Cyclosa pedropalo Levi, 1999 - Cyclosa pellaxoides Roewer, 1955 - Cyclosa pentatuberculata Yin, Zhu & Wang, 1995 - Cyclosa perkinsi Simon, 1900 - Cyclosa picchu Levi, 1999 - Cyclosa pichilinque Levi, 1999 - Cyclosa pseudoculata Schenkel, 1936 - Cyclosa psylla (Thorell, 1887) - Cyclosa punctata Keyserling, 1879 - Cyclosa punjabiensis Ghafoor & Beg, 2002 - Cyclosa pusilla Simon, 1880 - Cyclosa quavansea Roberts, 1983 - Cyclosa quinqueguttata (Thorell, 1881) - Cyclosa reniformis Zhu, Lian & Chen, 2006 - Cyclosa rhombocephala (Thorell, 1881) - Cyclosa rubronigra Caporiacco, 1947 - Cyclosa sachikoae Tanikawa, 1992 - Cyclosa saismarka Barrion & Litsinger, 1995 - Cyclosa sanctibenedicti (Vinson, 1863) - Cyclosa santafe Levi, 1999 - Cyclosa sedeculata Karsch, 1879 - Cyclosa senticauda Zhu & Wang, 1994 - Cyclosa serena Levi, 1999 - Cyclosa seriata (Thorell, 1881) - Cyclosa shinoharai Tanikawa & Ono, 1993 - Cyclosa sierrae Simon, 1870 - Cyclosa simoni Tikader, 1982 - Cyclosa simplicicauda Simon, 1900 - Cyclosa spirifera Simon, 1889 - Cyclosa strandi Kolosváry, 1934 - Cyclosa tamanaco Levi, 1999 - Cyclosa tapetifaciens Hingston, 1932 - Cyclosa tardipes (Thorell, 1895) - Cyclosa tauraai Berland, 1933 - Cyclosa teresa Levi, 1999 - Cyclosa tricolor (Leardi, 1902) - Cyclosa trilobata (Urquhart, 1885) - Cyclosa tripartita Tullgren, 1910 - Cyclosa triquetra Simon, 1895 - Cyclosa tropica Biswas & Raychaudhuri, 1998 - Cyclosa tuberascens Simon, 1906 - Cyclosa turbinata (Walckenaer, 1842) - Cyclosa turvo Levi, 1999 - Cyclosa vallata (Keyserling, 1886) - Cyclosa vicente Levi, 1999 - Cyclosa vieirae Levi, 1999 - Cyclosa walckenaeri (O. Pickard-Cambridge, 1889) - Cyclosa woyangchuan Zhang, Zhang & Zhu, 2010 - Cyclosa xanthomelas Simon, 1900 - Cyclosa yaginumai Biswas & Raychaudhuri, 1998 - Cyclosa zhangmuensis Hu & Li, 1987