The Val Sinestra (Romansh lit.: left valley) is a valley of the Swiss Alps, located in the Engadin between the Silvretta and the Samnaun ranges. The valley is drained by La Brancla, a tributary of the Inn basin, near Ramosch. The highest mountains in the Val Sinestra are the Muttler (3,293 m), Piz Tschütta (3,254 m) and Piz Tasna (3,179 m). The valley is approximately 10 kilometres long.