Countercontrol is a functional class of behavior that is part of Skinner's analysis of social behavior. Countercontrol refers to behavioral episodes comprised of socially mediated aversive controlling conditions and escape or avoidance responses that do not reinforce, and perhaps even punish, controllers' responses. This paper suggests that neglect of countercontrol in modern behavior analysis is unfortunate because the concept applies to interpersonal and social relations the fundamental operant principle that human behavior is both controlled and controlling-humans are not passive and inflexible. Countercontrol is addressed here in terms of conceptual status, contemporary developments in behavior analysis, its importance in a behavior-analytic approach to freedom and cultural design, applications, and research. The main conclusion is that Skinner's formulation of counter-control is scientifically supported and worthy of increased prominence in behavior analysis.