SG Dynamo Dresden are a German association football club, based in Dresden, Saxony. They were founded in 1950, as a club affiliated with the East German police, and became one of the most popular and successful clubs in East German football, winning eight league titles. After the reunification of Germany, Dynamo played four seasons in the top division Bundesliga (1991–95), but have since drifted between the second and fourth tiers. The club achieved promotion to the 2. Fußball-Bundesliga for the 2011–12 season.

The city of Dresden had played a significant part in German football before and during World War II with local club Dresdner SC earning national championships in 1943 and 1944. After the war the occupying Allied authorities dissolved organizations across the country, including sports and football clubs like SC, as part of the process of denazification. DSC was reestablished in 1946 as SG Friedrichstadt, but with the eastern part of the country, including Dresden, under Soviet control, authorities considered the club to be too bourgeois. After a riot at the final of the 1950 East German championship, the club was dissolved.

Olaf Janßen (born 8 October 1966 in Krefeld) is a retired German footballer who played in midfield. Janßen spent most of his playing career with German Bundesliga sides 1. FC Köln and Eintracht Frankfurt, where he later worked as a scout.

Janßen played for West Germany at the 1988 Summer Olympics in Seoul.