American Library Association (ALA)
ALA has many divisions (below) that focus on different aspects of librarianship:
Other Organizations of Interest:

In Missouri:
Library conferences area great way to support your professional development, and learn about new trends in the field. Even if you can't attend, reading articles association with presentations, or looking through past conference archives can keep you up to date.
MLA Annual Conference - St. Charles, MO: October 8-9, 2025
AASL National Conference - St. Louis: October 16-18, 2025 (every 2 years)
Brick & Click Annual Conference - Maryville, MO: November 3, 2025
MASL Spring Conference - Osage Beach, MO: April 19-20, 2026
LOEX Annual Conference - Norfolk, VA: May 7-9, 2026
MOBIUS Annual Conference - Columbia (?), MO: June 3, 2026 (FREE)
ALA Annual Conference - Chicago, IL: June 25-June 29, 2026
MLA Annual Conference - Springfield, MO: September 2026
Future ALA Annual and LibLearX Conferences