定理机器证明（Automated theorem proving，简称ATP）目前是自动推理（Automated reasoning，简称AR）体系中发展最好的部分，它的目的是为使用电子计算机进程来进行数学定理的证明。对于不同的数学逻辑，它能够推论出一个定理是正确的，还是不可证明的，或者错误的。

Automated theorem proving (also known as ATP or automated deduction) is a subfield of automated reasoning and mathematical logic dealing with proving mathematical theorems by computer programs. Automated reasoning over mathematical proof was a major impetus for the development of computer science.