James M. Falkinburg (September 25, 1932 – June 18, 2014), known in the entertainment industry as James "Jim" Nelson, was an American sound editor, film producer and post-production supervisor.

As a sound editor, Nelson worked on many of the iconic films and television programs of the 1950s, '60s and '70s, including Rock Around the Clock, The Monkees, the beach party films, The Brady Bunch, Easy Rider, Five Easy Pieces and The Exorcist. In total, he edited the sound effects for over 100 films and 38 television programs comprising more than 1,700 episodes, as well as several made-for-TV movies, documentaries and television specials.

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