David "Dave" Frishberg (born March 23, 1933) is an American jazz pianist, vocalist, composer and lyricist born in Saint Paul, Minnesota. Many of his songs have been performed by artists such as Blossom Dearie, Rosemary Clooney, Shirley Horn, Anita O'Day, Michael Feinstein, Irene Kral, Diana Krall, Stacey Kent, John Pizzarelli, and Mel Tormé.
Frishberg is also noted as having written the music and lyrics for "I'm Just a Bill", the song about the forlorn legislative writ in the ABC Schoolhouse Rock! series, which was subsequently transformed into the popular revue "Schoolhouse Rock Live". For "Schoolhouse Rock!" he also wrote and performed "Walkin' on Wall Street", a song that describes how the stock market works, and "$7.50 Once a Week", a song about saving and balancing a budget.
He also wrote "Van Lingle Mungo", a novelty song consisting solely of the names of Major League Baseball players.