Claude Frank (December 24, 1925 – December 27, 2014) was a German-born, American Jewish pianist whose career included appearances at major festivals, and in recital halls around the world.

Frank was born in Nuremberg, Germany, and studied at the Paris Conservatoire; worked with Artur Schnabel in New York, for whom he first played in Europe; studied with Schnabel's last and favourite pupil, Maria Curcio; and studied composition and conducting at Columbia University. At Tanglewood he studied with Serge Koussevitzky. He has performed worldwide as a soloist with distinguished orchestras, touring Asia, Australia, Europe, Israel and South America, and in chamber music concerts. A milestone in his career was RCA's release of his recordings of the 32 Beethoven piano sonatas and his worldwide performances of the cycle.

He appeared in joint concerts with his wife, pianist Lilian Kallir (1931–2004), and, in recent years, with his daughter, the renowned violinist Pamela Frank (born 1967). Frank serves on the faculty of the Curtis Institute of Music in Philadelphia, Pennsylvania, and presents master classes at Yale University, Duke University, the University of Kansas, and the North Carolina School of the Arts among many others. He has been on the piano faculty of the Yale School of Music since 1973.

Claude Frank wrote his memoirs with co-author Hawley Roddick: The Music That Saved My Life: From Hitler's Germany to the World's Concert Stages. Under submission for publication by their literary agent, it is a story rich in details about European and musical history, tracing Frank's career from days as a protégée of Artur Schnabel to those as a teacher of Richard Goode. More recently, he performed alongside nine other legendary pianists at “The Olympic Centenary Piano Extravaganza of China” in Beijing, China.