Evelyn Haas, born Evelyn Traeger (born 7 April 1949) is a German former First Senate Constitutional Court judge and current Honorary Professor of Law. She was the first woman to be elected to the Constitutional Court in Germany.
After receiving her doctorate in 1974, Haas became a judge in Lower Saxony. She was at the Administrative Court for ten months, then seconded to the local government in Wolfsburg. From 1982 to 1986 she was seconded as a research assistant at the Federal Government of Germany and from 1986 to 1990, a judge at the Higher Administrative Court of Lüneburg. From 1987 to 1990 she was also Head of Unit in the Lower Saxony State Chancellery.
She was responsible for certain areas of German tax law, development law, construction law, land law, the German expropriation law, land transport and urban development. She was a planning law specialist, except for environment law. She had input on several landmark case law decisions, sometimes dissenting from her colleagues.