A party group is a formal group within an organization that works to ensure democratic centralism as led by the Chinese Communist Party (CCP). Party groups ensure the control of formally non-CCP public institutions like government organizations, people's organizations, people's congresses, and state-owned enterprises by the CCP. The concept of party group was first formalized in the 1945 party constitution during the 7th National Congress.

As an example, the party's Organization Department controlled the Ministry of Human Resources and Social Security through an eleven-member party group as of 2010.

Party groups were organized within the short-lived Workers' Party of North Korea.