椰油酰胺丙基甜菜碱是一种从椰子油和二甲基氨基丙胺中提取的季铵盐两性离子表面活性剂，为一种抗菌防腐药及抗静电剂，常见于化妆品。

Cocamidopropyl betaine (CAPB) is an organic compound derived from coconut oil and dimethylaminopropylamine. CAPB is available as a viscous pale yellow solution and it is used as a surfactant in personal care products. The name reflects that the major part of the molecule, the lauric acid group, is derived from coconut oil. Cocamidopropyl betaine to a significant degree has replaced cocamide DEA.