Abstract
The aim of the paper is to show that there are actions which are non-intentional. An account is first given which links intentional and unintentional action to acting for a reason, or appropriate causation by an intention. Mannerisms and habitual actions are then presented as examples of behavior which are actions, but which are not done in the course of acting for a reason. This account has advantages over that of Hursthouse's "arational actions," which are allegedly intentional actions done for no reason at all. Finally, one consequence of neglecting non-intentional action is discussed to illustrate its importance.