Chairperson
Although "chairman" has been used for both men and women, some prefer to use the terms "chairperson", "madame chairman" or "chairwoman." The conduct of meetings is governed by the organization's by-laws or charter, or, more formally, Parliamentary procedure for government organizations or large meetings generally.  Rarely the chairperson is called the "chair," though in educational institutions a "chair" indicates a specific endowed position on a faculty.