The Deutsches St. Leger is a Group 3 flat horse race in Germany open to thoroughbreds aged three years or older.
It is run at Dortmund over a distance of 2,800 metres (about 1¾ miles), and it is scheduled to take place each year in September or October.
The present system of race grading was introduced in Germany in 1972, and the Deutsches St. Leger was initially given Group 2 status.
The first winner to complete a Triple Crown (having previously won the Henckel-Rennen and the Deutsches Derby) was Königsstuhl in 1979.
The Deutsches St. Leger was relegated to Group 3 level in 2005, and opened to older horses in 2007.