What is the term for a leader of multiple churches within a particular denomination?

The term for a leader of multiple churches within a particular denomination is "Bishop." This title refers specifically to a church leader who oversees a hierarchy of churches, often providing guidance, support, and a degree of administration to the congregations within their jurisdiction. Bishops usually hold significant authority and may be responsible for ordaining new clergy, ensuring doctrinal consistency, and addressing issues that arise within the churches they oversee.

In many Christian denominations, a bishop plays a crucial role in maintaining the spiritual and organizational health of their congregations, serving as a link between individual churches and the broader denominational structure. This role is distinct from pastoral positions, which are typically focused on the leadership of a single church rather than a group of them.