Pentaplaris is a genus of flowering plants in the family Malvaceae. It includes three species native to Costa Rica and western South America (Colombia, Ecuador, Peru, and Bolivia).

Three species are accepted:

• Pentaplaris davidsmithii Dorr & C.Bayer
• Pentaplaris doroteae L.O.Williams & Standl.
• Pentaplaris huaoranica Dorr & C.Bayer

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