私人公司（英语：Privately held company），又称私营企业、封闭公司（close corporation），是指非政府组织，有时更指非上市公司。私人公司的体制大多为有限公司，但亦有属股份有限公司者。

私人公司的股东及董事会成员，都是自然人或其他私人法人。私人公司的组织架构比较简单，如中小企业，不过也有些私人公司是大集团的子公司或母公司，它们的公司治理及透明度，不必向外公报，除非是指定业务的私人公司，如私营银行、证券公司、慈善团体等。

A privately held company or close corporation is a business company owned either by non-governmental organizations or by a relatively small number of shareholders or company members which does not offer or trade its company stock (shares) to the general public on the stock market exchanges, but rather the company's stock is offered, owned and traded or exchanged privately. More ambiguous terms for a privately held company are unquoted company and unlisted company.