I recently renewed a few memberships in some of the woodwind-related professional organizations. I like to stay current with as many of these as I can, because I enjoy receiving their publications and attending their conferences whenever possible. Most offer some other benefits like score and book lending libraries, eligibility for a group instrument insurance plan, member directories, and exclusive website content.
Membership is especially useful for woodwind folks in academia—students and professors alike—who are hoping to build their vitae. There are opportunities to publish articles, interviews, reviews, and such in the organizations’ publications, and to perform, present lectures and demonstrations, and participate in competitions and masterclasses at the conferences. Students can usually join the organizations and attend the conferences at significant discounts.
The groups I’m listing below are the major ones that North American woodwind players ought to seriously consider joining. There are others, mainly regional groups, of which I list as many as I’m aware elsewhere on this site (see flute, oboe, clarinet, bassoon, and saxophone organizations).