Norbert Glanzberg (12 October 1910 in Rohatyn, Austria-Hungary – 25 February 2001 in Paris) was a Galician-born French composer. Mostly a composer of film music and songs, he was also notable for some famous songs of Édith Piaf.

In his twenties he lived in Germany, where he began his career scoring films for directors including Billy Wilder and Max Ophüls. When the Nazi regime came to power there in 1933, he, as a Jew, fled to Paris, where he performed in nightclubs under bandleaders such as Django Reinhardt, which is where he first met Piaf.

At different times from 1939 to 1945 he toured with Piaf, when he wrote many of her songs and accompanied her on piano when she sang. For many of those years they were lovers, and Piaf saved his life on more than one occasion by hiding him from both the French Vichy police, who were helping the Nazis round up Jews for deportation, and later from the Nazi occupiers themselves.

After the war he continued writing film scores for French films along with composing classical music, which included works and songs from Berlin and romantic classics. At the end of his career he wrote a concerto for two pianos in 1985 which was inspired by the novels of Isaac Bashevis Singer.