Quatro subespécies são atualmente reconhecidas.[3] Uma autoridade trinomial entre parênteses indica que a subespécie foi originalmente descrita em um gênero diferente de Aldabrachelys
A. g. daudinii † (A.M.C. Duméril & Bibron, 1835:123),[5] tartaruga gigante de Daudin, da ilha de Mahé, nas Seicheles (extinta em 1850)[3]
A. g. hololissa(Günther, 1877:39),[6] tartaruga gigante das Seicheles, das ilhas Seicheles de Cerf, Cousine, Frégate, Mahé, Praslin, Round e Silhouette
Turtle Taxonomy Working Group [van Dijk, P.P., Iverson, J.B., Rhodin, A.G.J., Shaffer, H.B., and Bour, R.]. 2014. Turtles of the world, 7th edition: annotated checklist of taxonomy, synonymy, distribution with maps, and conservation status. In: Rhodin, A.G.J., Pritchard, P.C.H., van Dijk, P.P., Saumure, R.A., Buhlmann, K.A., Iverson, J.B., and Mittermeier, R.A. (Eds.). Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group. Chelonian Research Monographs 5(7):000.329–479, doi:10.3854/ crm.5.000.checklist.v7.2014.
Duméril, André Marie Constant, and Bibron, Gabriel. 1835. Erpétologie Générale ou Histoire Naturelle Complète des Reptiles. Tome Second. Paris: Roret, 680 pp.
Günther, Albert C.L.G. 1877. The Gigantic Land-Tortoises (Living and Extinct) in the Collection of the British Museum. London: Taylor and Francis, 96 pp.
Bour, Roger (1982). "Contribution à la connaisance des tortues terrestres des Seychelles: définition du genre endémique et description d'une espéce nouvelle probablement originaire des îles grantiques & bord de l'extinction". Comptes Rendus de l'Académie des Sciences295: 117–122. (Dipsochelys arnoldi, new species, p. 118). (in French).
