Tim Nelson or Timothy Nelson may refer to:
Entertainment Tim Blake Nelson (born 1964), American actor and director Tim Nelson (musician), lead vocalist of Australian band Cub Sport Tim Nelson (American musician), American musician and record producer Timothy Nelson, an Australian musician and lead singer of Timothy Nelson & The Infidels.
Sports Tim Nelson, baseball manager for Ottawa Fat Cats Tim Nelson (lacrosse) (born c. 1963), American lacrosse player Tim Nelson (pickleball), namesake of the Nasty Nelson serve Tim Nelson (runner) (born 1984), American distance runner