This article shows that associative freedom is not what we tend to thinkit is. Contrary to standard liberal thinking, it is neither a general moral permissionto choose the society most acceptable to us nor a content-insensitive claim-rightakin to the other personal freedoms with which it is usually lumped such asfreedom of expression and freedom of religion. It is at most (i) a highly restrictedmoral permission to associate subject to constraints of consent, necessity andburdensomeness; (ii) a conditional moral permission not to associate provided ourassociative contributions are not required; and (iii) a highly constrained, contentsensitive moral claim-right that protects only those wrongful associations thathonour other legitimate concerns such as consent, need, harm and respect. Thisarticle also shows that associative freedom is not as valuable as we tend to think itis. It is secondary to positive associative claim-rights that protect our fundamentalsocial needs and are pre-conditions for any associative control worth the name.