资本财（英语：capital good）是一种经济学里的耐久财，可以用来生产产品或服务，是由生产者投入的三种要素之一（另外两者为土地及人力），三者合称为生产要素。在经济系统及马克思经济学派里，通常将生产要素与资本财当成同义词。其分别最早来自于古典经济学派兴起时，且至今仍坚信两者有别。

一个社会可以透过对于钱财的储蓄来投资在这种生产要素上，进而创造出资本财。在经济学上，有些人认为资本财必须是实体的存在，在特定期间内，用以生产其它的产品或服务。在生产其它可供销售物品时，在过程中所需的机器、工具、厂房、电脑、或其他类型设备，都可作为资本财的代表。拥有资本财的个体，可以是个人、家户、公司、或政府，任何用以生产其它物品的材料，都可被视为资本财。

A capital good is a durable good (one that does not quickly wear out) that is used in the production of goods or services. Capital goods are one of the three types of producer inputs, the other two being land and labor, which are also known collectively as primary factors of production. In the study of economic systems and in Marxian economics, the term means of production is often used with the same meaning as capital goods. This classification originated during the classical economic period and has remained the dominant method for classification.