Leptactina is a genus of flowering plants in the family Rubiaceae. There are about 27 species. They are all native to sub-Saharan Africa, where most occur in rainforest habitat.

27 species are accepted:

• Leptactina angolensis (Hutch.) Bullock ex I.Nogueira
• Leptactina arborescens (Welw. ex Benth. & Hook.f.) De Block
• Leptactina benguelensis (Welw. ex Benth. & Hook.f.) R.D.Good
• Leptactina congolana (Robbr.) De Block
• Leptactina deblockiae Neuba & Sonké
• Leptactina delagoensis K.Schum.
• Leptactina densiflora Hook.f.
• Leptactina epinyctios Bullock ex Verdc.
• Leptactina euclinioides K.Schum.
• Leptactina formosa K.Schum.
• Leptactina gloeocalyx K.Schum.
• Leptactina involucrata Hook.f.
• Leptactina latifolia K.Schum.
• Leptactina laurentiana Dewèvre
• Leptactina liebrechtsiana De Wild. & T.Durand
• Leptactina mannii Hook.f.
• Leptactina oxyloba K.Schum.
• Leptactina papalis (N.Hallé) De Block
• Leptactina papyrophloea Verdc.
• Leptactina platyphylla (Hiern) Wernham
• Leptactina polyneura K.Krause
• Leptactina pretrophylax K.Schum.
• Leptactina prostrata K.Schum.
• Leptactina pynaertii De Wild.
• Leptactina rheophytica Sonké & Neuba
• Leptactina senegambica Hook.f.
• Leptactina tessmannii K.Krause

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