Harry Fragson (2 July 1869 – 31 December 1913), born Léon Philippe Pot, was a British music hall singer, songwriter and comedian.

He was educated for some time in Antwerp, and at the start of his career took the name "Frogson" (from the pejorative slur for a French person), before accepting advice to modify it to "Fragson", which he often used as a mononym.

The music hall historian Richard Anthony Baker described Fragson as "tall, with large expressive eyes, a drooping lower lip and long strands of hair that he plastered over his otherwise bald head".

[2] In 1905, Arthur Collins, the manager of the Theatre Royal, Drury Lane, saw him at the Folies Bergère, and offered him a part as Dandigny in the pantomime Cinderella in London.

[4] As a songwriter, he often worked with lyricists Worton David and Bert Lee, writing the songs "Other Department, Please" (1910), "All the Girls Are Lovely by the Seaside" (1913), and his biggest success, "Hello, Hello, Who's Your Lady Friend?"

[2] On 31 December 1913, while living at 56 rue Lafayette in Paris, Fragson returned home to discover his mentally ill father Victor Pot was just about to commit suicide.