速递，又名速递（英语：Courier），是指寄送物品的服务，属于物流的范畴之一，与邮递相当类似，但快递可寄送比较大件的物品，例如书籍、网络购物物品等。除了专门提供快递服务的业者外，各地的邮政系统也多有快递服务。除了较快送抵目的地及必须签收外，现时很多速递业者均提供货件追踪功能、送递时间的承诺及其他按客户需要提供的服务。因此，速递的收费比一般邮递昂贵。

速递业者可以不同的规模运作，小至服务特定市镇，大至区域、跨国甚至是全球服务。今日主要的全球性速递公司包括DHL、联合包裹服务公司、联邦快递和TNT。

A courier is a person who delivers messages, packages, and mail.

Couriers are distinguished from ordinary mail services by features such as speed, security, tracking, signature, specialization and individualization of express services, and swift delivery times, which are optional for most everyday mail services. As a premium service, couriers are usually more expensive than standard mail services, and their use is normally limited to packages where one or more of these features are considered important enough to warrant the cost.