This chapter aims to provide a basic understanding of the sources and causes of violence in hockey and offers possible ways to reduce it. First, the relation between violence in society and violence in sports is examined and its implications for the case of hockey are discussed. Various determinants of hockey violence are reviewed. The remaining section focuses on the question of how the level of violence in hockey can be reduced and offers a three-prong strategy that draws mainly from social learning theory (Bandura, 1973, 1986) and dyadic processes leading to behavior change. Examples are drawn from an ongoing "Fair Play" campaign in Canada that is intended to reduce violence in hockey and in sports in general. Although player and spectator violence are interrelated components of violence in sports, this chapter focuses on player violence.