Ichikawa Shinnosuke (市川 新之助) is a stage name taken on by a series of Kabuki actors of the Ichikawa family. Most of these were blood relatives, though some were adopted into the family.
Shinnosuke, like other actors' names, is bestowed (or given up) at grand naming ceremonies called shūmei in which a number of actors formally change their names. A number of actors have followed a particular sequence in their stage names, following their time as Ichikawa Shinnosuke by being granted the names Ichikawa Ebizō or Ichikawa Danjūrō.
The design of the Ichikawa family mon, three squares nested inside one another, is called mimasu (三升).