能力成熟度模型集成（英文：Capability Maturity Model Integration，简称CMMI或“希迈”）是一个过程改进方法，它的目的是帮助组织改进他们的绩效。“希迈”可以被用于引导横贯一个项目、一个部门或一个完整的组织的过程改进。

在软件工程和组织发展中的希迈，是一个过程改进方法，它向组织提供用于有效的过程改进的基本元素。“希迈”由卡内基·梅隆大学（英文：Carnegie Mellon University）在美国专利和商标局（英文：U.S. Patent and Trademark Office）注册。

Capability Maturity Model Integration (CMMI) is a process improvement training and appraisal program and service administered and marketed by Carnegie Mellon University (CMU) and required by many DoD and U.S. Government contracts, especially in software development. CMU claims CMMI can be used to guide process improvement across a project, division, or an entire organization. CMMI defines the following maturity levels for processes: Initial, Managed and Defined. Currently supported is CMMI Version 1.3. CMMI is registered in the U.S. Patent and Trademark Office by CMU.