This chapter discusses the role and results of humor and laughter in cross-cultural or multi-cultural environments. The chapter covers the role that various humor types can have, as well as the effects of their use, in environments where all the members may not share the same cultural and societal backgrounds. Since humor and laughter require a shared background, the outcomes of the use of humor and laughter in these situations is less predictable than in situations where the cultural backgrounds of the members are more uniform. As with previous chapters attention is paid to recent empirical research on the topics.