Simaba is a genus of flowering plants belonging to the family Simaroubaceae.

[1] It was first published by French botanist Jean Baptiste Christophore Fusée Aublet (1720–1778), in Hist.

[1] Hans Peter Nooteboom (1934–2022) in 1962 (published in 1963), took a very broad view of the genus Quassia L. and included therein various genera including, Hannoa Planch., Odyendyea (Pierre) Engl., Pierreodendron Engl., Samadera Gaertn., Simaba Aubl.

[2] In 2007, molecular analyses of the Simaroubaceae family (Clayton et al., 2007), suggested the splitting up of genera Quassia again, with all Nooteboom's synonyms listed above being resurrected as independent genera.

[3] As accepted by Plants of the World Online;[1] The genus is native to the countries (and regions) of; southern America (within Bolivia, Brazil, Costa Rica, Colombia, Ecuador, French Guiana, Guyana, Panamá, Peru, Suriname and Venezuela), the Caribbean, (within Trinidad and Tobago), tropical Africa (within Angola, Cabinda (in Angola), Cameroon, Congo, Equatorial Guinea, Gabon, and Zaïre (now Democratic Republic of the Congo) and western Malesia (within Borneo and Sumatra).