Alfred Wittenberg was a German violinist and pianist of Jewish origin. Born in Wrocław, Prussia, he was a child prodigy: at the age of ten he gave a concert that included Mendelssohn's Violin Concerto and Chopin's Piano Concerto.
He studied with Joseph Joachim and won the Mendelssohn Prize in the competition of German conservatories as a violinist in 1901. Wittenberg played violin in the Berlin Opera Orchestra and performed in several piano trios, including ensembles with Frederic Lamond and Joseph Malkin; Anton Ecking and Artur Schnabel, later Clarence Adler; and Heinrich Grünfeld and Moritz Mayer-Mahr.
In 1921, the future composer Jon Fernström studied with Wittenberg. During the 1930s he lived and worked in Dresden, where he performed in a trio with Walter Goldmann and Paul Blümfeld.
Wittenberg settled in Shanghai in 1939 and taught there for the rest of his life. His pupils included the Chinese pianist Li Mingqiang and the Austrian violinist Heinz Grünberg. After the Second World War, he taught at the eastern branch of the Central Conservatory of Music, now the Shanghai Conservatory of Music. He died in Shanghai in 1952.