Pitasch is a former municipality in the district of Surselva in the canton of Graubünden in Switzerland . On 1 January 2014 the former municipalities of Pitasch, Castrisch , Ilanz, Ladir , Luven , Riein , Ruschein , Schnaus , Sevgein , Duvin , Pigniu , Rueun and Siat merged into the new municipality of Ilanz/Glion .

Pitasch is first mentioned about 801–50 as Pictaui though this comes from a 16th-century copy of the lost original. In 960 it was mentioned as in Pictaso.

Before the merger, Pitasch had a total area of 10.8 km2 (4.2 sq mi). Of this area, 31.4% is used for agricultural purposes, while 49.1% is forested.