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Moderator provinciae, the title of certain Roman provincial governors.

a Scots and (originally) Scottish English, gender-neutral word that approximates chairman, someone who convenes, heads and "moderates" the discussion in a meeting, such as the nonpartisan presiding officer of a town meeting

The chairperson of a church court in Presbyterian churches; this includes Moderator of the General Assembly, Moderators and clerks in the Church of Scotland and Moderator of the General Assembly of the Church of Scotland.

A position in some Roman Catholic organizations, including the Apostleship of Prayer; and compounds such as moderator general in the Cistercian Order.

Forum moderator, one who oversees discussions on an Internet forum.

Neutron moderator, a medium that reduces the velocity of neutrons.

Cornell Moderator, a student-run political publication at Cornell University.