Phil Campbell (born 1972) is an American author and documentary producer.

[1] He is the author of the book Zioncheck for President[2] upon which the film Grassroots is based.

The book, a mix of memoir and gonzo reporting,[3] is set around Campbell's time as campaign manager for a Seattle city council candidate.

[4] The book's title references Marion Zioncheck, a United States Congressman from the state of Washington who committed suicide in 1936.

He also organized the "I'm With Phil" campaign, a relief effort to help the residents of the town after a devastating tornado.