公司金融学（corporate finance），又称企业融资，公司财务管理，公司理财等。它是金融学的分支学科，用于考察公司如何有效地利用各种融资渠道，获得最低成本的资金来源，并形成合适的资本结构（capital structure）；还包括企业投资、利润分配、运营资金管理及财务分析等方面。它会涉及到现代公司制度中的一些诸如委托-代理结构的金融安排等深层次的问题。一般来说，公司金融学会利用各种分析工具来管理公司的财务，例如使用贴现法(DCF)来为投资计划总值作出评估，使用决策树分析来了解投资及营运的弹性。

Corporate finance is the area of finance dealing with the sources of funding and the capital structure of corporations and the actions that managers take to increase the value of the firm to the shareholders, as well as the tools and analysis used to allocate financial resources. The primary goal of corporate finance is to maximize or increase shareholder value. Although it is in principle different from managerial finance which studies the financial management of all firms, rather than corporations alone, the main concepts in the study of corporate finance are applicable to the financial problems of all kinds of firms.