Legal instrumentalism has a bad name: it is criticized for reducing law to a policy instrument for external political or economic goals. In this paper I aim to rehabilitate instrumentalism, at least to some extent, by reinterpreting it from the perspective of pragmatist interactionism. By seeing law as emerging from the interactional expectancies of people towards one another, law is conceptually based on horizontal relationships (building on the theory of Lon Fuller). In the paper I will argue that this horizontal orientation can provide a specific version of an instrumental view of law because it pluralizes law’s instrumentality. Law is no longer seen as a policy instrument in the hands of authorities, but as a tool for everyone who makes...