The mahjong package provides a LaTeX interface for typesetting mahjong tiles using an extended version of MPSZ algebraic notation. Its features include spaces, rotated, blank, and concealed tiles, as well as red fives. The size of the mahjong tiles can be controlled using a package option and an optional argument of \mahjong. It is primarily aimed at Riichi (aka Japanese) Mahjong but can be used to typeset any style of mahjong.