Walter Weller was born in Vienna and became a member of the Vienna Philharmonic Orchestra at the age of 17. The following year he founded the Weller Quartet which became internationally famous during its ten year existence. In 1961 Walter Weller became first Konzertmeister of the Vienna Philharmonic and in 1966 made his debut as a conductor.

From the 2007/08 season, Walter Weller has taken up the post of Music Director to the National Orchestra of Belgium. Weller was Music Director and Principal Conductor of the Royal Scottish National Orchestra and is now Conductor Emeritus. Mr. Weller has been bestowed the title of Conductor Laureate to the Stuttgart Philharmonic Orchestra and also holds the position od Associate Director with the Orchestra of Valencia, Spain. He was (Artistic Director of the Allgemeine Musikgesellschaft Basel, General Music Director of the Basel Theater and Chief Conductor of the Basel Symphony Orchestra,) Principal Conductor of the Royal Philharmonic Orchestra and Music Director and Artistic Director to the Royal Liverpool Philharmonic.

On 22 December 1998 Walter Weller was awarded the great Silver Cross of Honour for Services to the Republic of Austria and in 1999 a medal from the Cambrigde Biographical Centre for Outstanding People of the 20th Century