On both sides of the Equatorial Atlantic, the conjugate transform margins of NE Brazil and West Africa display distinct geomorphic patterns, in spite of the former continuity between the segments of the Brasiliano-Pan-African orogen that form their basement. Results of a previous analysis of post-break-up landform evolution of the Brazilian side are compared with available data on West Africa. Located east of large sedimentary basins, the post-orogenic Parnaiba basin and the syn-orogenic Volta basin, both regions form 400 km long and 300-600 km wide divide zones between the oceanic front and major rivers that pass round them before reaching the ocean (São Francisco, Niger). Together with structural differences in the basement, the obliquity of the final opening zone relatively to the pre-break-up rift zones explains the asymmetry. On the northern Nordeste margin, the initial shearing zone and the related oceanic transform faults obliquely intersect segments of rifted margin and the continental Cariri-Potiguar rift zone. The African counterpart (Dahomeyides, Nigerian Province) is located west the Benue trough, the former geographical continuation of the Potiguar rift, but part of it (SW Nigeria) is also a shoulder of the Benue trough. In both areas, coastal lowlands of variable width, underlain by Late Cenozoic and locally older sediments (Tabuleiros, Potiguar basin; Cotonou-Lagos basin, Niger delta) separate the continental shelf from inner systems of plains and highlands. A discontinuous marginal scarp is defined in NE Brazil, intersecting a vast hemicycle of plateaus and depressions shaped into the Early Cretaceous rift shoulders (Borborema-Araripe-Ibiapaba, 0-1200 m). No similar scarp is found on the African side. A narrow NNE trending system of ridges extending from the coast to the Niger valley (Togo-Atakora Mountains, up to 870 m) separates the low dissected plateaus of the Volta basin (Ghana) from wide basement uplands gently rising northward from the coastal fringe of sedimentary plains and cuestas (Benin, SW Nigeria, 0-600 m). In spite of differences in the climatic conditions, between the African forest and savannah environments and their convex hill landscapes (in the south), and the concave profiles of pediplains and inselbergs of the semi-arid NE Brazil, systems of stepped surfaces and similar differential erosion features (excavated shear zones, quartzitic ridges, etc.) are found on both sides. Some surfaces are covered by laterites, mainly at high and intermediate levels. On the coasts, long sandy beaches, barrier islands and lagoons are found on both sides, although the sediment supply is stronger on the African side (Niger and Volta deltas) than on the Brazilian side, where deposits are better accommodated by the wider shelf, underlain in its outer parts by carbonate constructions. On this side, the presence of two main stepped surfaces (a high level composed of dissected palaeo-surfaces, and a low surface made of interior pediplains connecting seaward in a wide piedmont partly buried by Late Cenozoic sediments), suggests a simple but spatially differentiated evolution. After the Neocomian intracontinental rifting along Brasiliano shear zones, the post-rift subsidence, the transform oceanic opening (in transtensional conditions on this segment), and the formation of the passive margin, the morphotectonic evolution responded to flexural uplift initiated by a Late Cretaceous event (uplift of the Borborema with the eastern margin of Brazil) and followed by slow vertical movements. Such a flexure, and possible minor reactivations of Pan-African shear zones, are also recorded in the Benin-SW Nigeria plateau by monoclinal patterns developed in the Cotonou-Lagos basin and long NNE-trending fault line scarps in the basement. The lack of marginal scarp probably reflects weaker initial uplift or marginal down-warping during the break-up process, followed by moderate regional uplift that induced superimposition phenomena into basement ridges (lower Volta valley). Variations in relief of the highlands and across the coastal strip below the Brazilian escarpment, partly reflected by differential preservation of Mesozoic deposits and palaeo-landforms (fault scarps, palaeo-piedmonts), reflect differential uplift at some stage, along Brasiliano shear zones. Lateral variation also occurred on the African margin, as shown by the shape of the coastal basin. Its evolution may share similarities with that of northeastern Brazil, with low rates of erosion, modulated by increasingly strong climatic oscillations from dry to humid conditions along the Cenozoic.