Between 1996 and 1998 Loose was the coach for the Liechtenstein Under-18s team. On 1 July 1998, he was appointed to Liechtenstein national team manager. Ralf held this position until 29 July 2003. On 1 July 2004 he became coach at a regional team Sportfreunde Siegen. After a brief spell with FC St. Gallen he returned to Sportfreunde Siegen. Ralf Loose replaced Rainer Hörgl as coach at FC Augsburg in October 2007. Loose was sacked in April 2008 after a dismal season that has left Augsburg teetering close to relegation. He was appointed as manager of Dynamo Dresden in April 2011. He earned promotion in his first season, after a playoff victory over VfL Osnabrück, but was sacked in December 2012 after a poor start to the 2012–13 season.