Piz Buin Pitschen (Rumantsch) or Kleiner Piz Buin (German) is a peak in the Silvretta Alps . The Piz Buin Pitschen lies western of his higher neighbor, the Piz Buin Grond or Großer Piz Buin.

The summit forms the border between Switzerland and Austria and is the second highest peak in Vorarlberg , a state of Austria, and the sixth highest peak of the mountain range after the Piz Linard , the Fluchthorn , the Piz Buin Grond, the Verstanclahorn and the Piz Fliana .

The first ascent was made 1868 by O.W. Stein and his guide Christian Jann.

The Piz Buin Pitschen lies on the main ridge of the Silvretta alps. It is separated from its more famous neighbour by the Buinlücke (Fourcla Buin), a 3056 m high mountain pass between the two summits.