German-born Austrian jazz pianist and vibraphonist (* 24 June 1928 in Bergisch-Gladbach, German Empire; † 17 September 1996 in Vienna, Austria).
Grah led his own quintet 19491953, then performed and recorded with Fatty George 1954-1959. In the 1960s he was host of a radio show in Vienna. He became an Austrian citizen in 1970. In the 1970s he played with the Austrian Barrelhouse Jazz Band and led his own quintet.
Older brother of Heinz Grah. Married to Louise Martini.