Walter Rehberg (14 May 1900 in Geneva – 24 October 1957) was a Swiss concert pianist, composer and writer on musical subjects who was particularly active from the 1920s to 1950s. Walter Rehberg came from a line of notable pianists. His grandfather was Friedrich Rehberg, a distinguished pianist, and his father Willy Rehberg (1863–1937). Walter studied under his father at Hoch Conservatory, Frankfurt, and at the University School of Music at Mannheim. He later received tuition from Eugen d’Albert. By 1924 he had composed piano sonatas, a violin sonata and other piano pieces. During the 1920s and 1930s he made recordings for Polydor/Brunswick records and in the 1940s he recorded for Decca.