 Seemingly the central interests that justify having an entry on causation in the law in a philosophy encyclopedia are: to understand just what is the law’s concept of causation, if it has one; to see how that concept compares to the concept of causation is use in science and in everyday life; and to examine what reason(s) there are justifying or explaining whatever differences there may be between the two concepts of causation. Other entries in this encyclopedia deal with the nature of causation as that relation is referred to in science and in everyday life. The philosophical interest in the law’s concept of causation is largely comparative: how does the law’s concept differ, if at all, from the more general concept of causation analyzed in philosophy, and are there good reasons explaining why there are such differences?