The surname Alt is said to be of German and Scottish origins. According to the Scottish research, the first people in Scotland to use this name were the Strathclyde-Britons. It was a habitational name given to people living in Auld in Ayrshire. The motto of the family was ‘by courage and perseverance’. According to the German, the name was found first in the region of Basel. The many variations of this surname include Alt, Alte, Ault, Alltte, Altte and many more.