A. dorsalis is found in three major disjunctive populations: (1) from eastern Sierra Leone easterly to western Togo; (2) from western Nigeria into the western part of Democratic Republic of Congo; (3) and in western subcoastal Angola. However, it is possible that the Angolan population is in fact contiguous with the population to the north. Other observation records from Uganda and western Kenya actually refer to Afrixalus osorioi (Schiøtz et al., 2009).
This species is distributed in the following countries: Angola; Cameroon; The Democratic Republic of the Congo; Côte d'Ivoire; Equatorial Guinea; Gabon; Ghana; Guinea; Liberia; Nigeria; Sierra Leone (Schiøtz et al. 2009).