Born in Broomall, Pennsylvania, Bonaduce is the son of veteran TV writer/producer Joseph Bonaduce (The Dick Van Dyke Show, One Day at a Time, etc.).
The younger Bonaduce became famous as a child actor of the 1970s on the TV sitcom The Partridge Family.
In 2007, Bonaduce was both host and judge of the show I Know My Kid's a Star, a reality show on VH1 featuring parents and children trying to break into show business.
Some have described this period as being the height of his professional career.
From 1994 to 1996, Bonaduce hosted his own radio show, The Danny Bonaduce Show on The Loop WLUP in Chicago.
Bonaduce and Partridge Family co-star Dave Madden made cameo appearances in a 1994 episode of Married... That same year, he appeared on an episode of Space Ghost Coast to Coast.
Later, when the episode was supposed to be on DVD, he refused it because he didn't like the show.