interdenominational

Interdenominational is an adjective describing actions, organizations, or relationships that involve more than one denomination within a given religion, most commonly Christianity. It denotes cooperation, partnership, or common activities across denominational lines, rather than allegiance to a single church tradition. Examples include interdenominational prayer services, Bible study groups that welcome members from several denominations, and schools, charities, or mission committees designed to serve participants from multiple denominations.

In contrast to ecumenism, which seeks formal unity or reconciliation between churches, interdenominational arrangements typically emphasize practical cooperation while preserving doctrinal distinctions and organizational autonomy.

The term is often contrasted with non-denominational, which describes activities or institutions not officially tied to any single denomination.

Historically, interdenominational efforts have been prominent in Protestant contexts, particularly in the United States and Britain, where churches from different traditions collaborated on social services, revival movements, education, or youth programs.

Critics argue it can dilute doctrinal integrity; supporters say it expands outreach and charitable impact.

The phrase appears in religious literature, organizational names, and event descriptions as a shorthand for inclusive cooperation across denominational lines.