The Spar- und Leihkasse Thun (SLT) was a Swiss regional savings and loan bank located in Thun, Switzerland. It collapsed in the autumn of 1991 and was the first notable bank run in that country. The failure of SLT eclipsed all previous troubles of Swiss banks. Though some Swiss banks experienced troubles in the 1970s, the Swiss deposit insurance only had to pay out a total of 700,000 Swiss francs in two bank failures before the collapse of the Spar- und Leihkasse Thun.