价值链（Value chain），又名价值链分析、价值链模型等。由迈克尔·波特（en:Michael Porter）在1985年，于《竞争优势》一书中提出的。波特指出企业要发展独特的竞争优势，要为其商品及服务创造更高附加价值，商业策略是解构企业的经营模式（流程），成为一系列的增值过程，而此一连串的增值流程，就是「价值链」。

一般企业的价值链主要分为：

A value chain is a set of activities that a firm operating in a specific industry performs in order to deliver a valuable product or service for the market. The concept comes from business management and was first described and popularized by Michael Porter in his 1985 best-seller, Competitive Advantage: Creating and Sustaining Superior Performance.