信用卡安全码（英文：Card Security Code）是信用卡在进行网络交易和电话交易时的一个安全特征。它通常是印刷在信用卡上面的3或4位数字，用于证实付款人在交易时是拥有信用卡的，从而防止信用卡欺诈。

不同的发卡组织的信用卡安全码的名称和印刷位置不同：

A card security code (CSC), (also called card verification data, card verification number, card verification value (CVV), card verification value code, card verification code (CVC), verification code (V-code or V code), card code verification, or signature panel code (SPC)) is a term for a security feature for "card not present" payment card transactions instituted to reduce the incidence of credit card fraud.