This chapter looks at suicide among adolescents and young adults. Although true suicide causation is difficult to empirically establish, an accumulated body of research points to a number of individual and environmental factors that have been closely and fairly consistently associated with youth suicidal behaviors. These risk factors are identified and briefly discussed here. The chapter looks the behavioral and environmental factors for suicide. The main aim of this chapter is to examine current youth suicide prevention strategies and interventions with an eye towards identifying what works, what does not appear to work, and what research needs to be undertaken to move the field forward. Given the multiplicity of risk and protective factors that have been related to youth suicide, it is understandable that many different approaches have been taken in the attempt to prevent this behaviour.