• Arachnoidiscus ehrenbergii J.W.Bailey ex Ehrenberg
• Arachnoidiscus ehrenbergii sensu A. Schmidt in Schmidt et al., 1881 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii sensu Pantocsek, 1886 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii f. ehrenbergii J.W. Bailey in Ehrenberg, 1849 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii f. paleocaenicus Jousé, 1951 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. californica Schmidt in Schmidt et al., 1882 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. californicus Schmidt in Schmidt et al., 1881 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. californicus sensu Pantocsek, 1886 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. californicus sensu Truan & Witt, 1888 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. cuneatus Monks, 1920 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. deficiens Grove in Schmidt et al., 1890 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. ehrenbergii sensu Van Heurck, 1896 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. evanescens Grunow in Schmidt et al., 1882 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. grevillii according to Mills, 1933 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. indicus Grunow in Van Heurck, 1909 accepted as Arachnoidiscus indicus var. indicus Ehrenberg, 1854
• Arachnoidiscus ehrenbergii var. javanica Reinhold, 1937 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. montereyana Schmidt in Schmidt et al., 1881 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. nankoorensis Desikachary & Ranjitha Devi in Desikachary, 1986 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. oamaruensis Schmidt in Schmidt et al., 1890 (uncertain > unassessed)
• Arachnoidiscus ehrenbergii var. splendens Brun, 1896 (uncertain > unassessed)