会长，即「一会之长」，是流行于汉字文化圈的职称；但随文化语境不同，可能指涉不同类型的职位。称为「会长」的职位包括：

• 在汉语地区，社会团体等非政府组织或各种俱乐部、协会（通常为非营利组织）的代表，例如某学生会或某工商协会会长。
• 在日本和韩国，不仅非营利组织，也可能指公司企业（会社）的代表；在后一种状况下，其职责相当于董事长，位阶高于社长。

The chairman is the highest officer of an organized group such as a board, a committee, or a deliberative assembly. The person holding the office is typically elected or appointed by the members of the group. The chair presides over meetings of the assembled group and conducts its business in an orderly fashion. When the group is not in session, the officer's duties often include acting as its head, its representative to the outside world and its spokesperson. In some organizations, this position is also called president (or other title), in others, where a board appoints a president (or other title), the two different terms are used for distinctly different positions.