In support of its mission, the American Library Association maintains collaborative relationships with a variety of outside organizations.
- Affiliate organizations of the American Library Association are independent groups having purpose or interests similar to those of the Association. Pursuant to Article X, Section 1, of the ALA Constitution and upon application formally made by the proper officers, the ALA Council has voted to affiliate with a number of societies.
- Chapters are state library associations in all fifty states, the District of Columbia, Guam, the U.S. Virgin Islands, and regional library associations in the Mountain Plains, New England, Pacific Northwest, and Southeastern regions. Chapters provide geographic representation to the Council of the American Library Association. But are independent organization.
- “Related groups” are those with which the American Library Association has a long-standing relationship, with interlocked governance structures in select cases.