The Bündner Wirren (Romansh: Scumbigls grischuns/Scumpigls grischuns/Sgurdins grischuns, French: Troubles des Grisons, Italian: Torbidi grigionesi, English: Graubünden disturbances or Revolt of the Leagues) was a conflict that lasted between 1618 and 1639 in what is now the Swiss canton of Graubünden.