Felix Arndt (May 20, 1889 – October 16, 1918) was an American pianist and composer of popular music. His mother was the Countess Fevrier, related to Napoleon III.

Educated in New York (his music teachers included Carl Lachmund), Arndt composed songs for the famous vaudeville team of Jack Norworth and Nora Bayes, and recorded over 3000 piano rolls for Duo-Art and QRS Records. He died in New York city aged 29 during the Spanish Flu pandemic.