Joseph Harnell (August 2, 1924 – July 14, 2005) was an American composer and arranger.

In 1973, Harnell moved to Hollywood and worked in film score and television composition, composing for shows such as The Bionic Woman and The Incredible Hulk, including "The Lonely Man Theme" with which all episodes of the series ended, playing over David Banner walking down yet another lonely road. He received an Emmy nomination in 1983 for the miniseries V.

"The Lonely Man Theme" is featured in the films The Incredible Hulk (2008) and Thor: Ragnarok (2017), and the video game Lego Marvel's Avengers.

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