The National Parks: America's Best Idea is a 2009 television documentary miniseries by director/producer Ken Burns and producer/writer Dayton Duncan which features the United States National Park system and traces the system's history.

Peter Coyote is the narrator of all episodes, with first-person voices supplied by Adam Arkin, Philip Bosco, Kevin Conway, Andy García, Tom Hanks, Derek Jacobi, Clay Jenkinson, John Lithgow, Josh Lucas, Carolyn McCormick, Campbell Scott, Gene Jones, George Takei, Eli Wallach and Sam Waterston.

The series was previewed in a seven-minute segment at the end of the fourth episode of Burns's 2007 PBS documentary, The War.

[citation needed] The first two-hour episode premiered at the Hopkins Center for the Arts at Dartmouth College on April 17, 2009.

The National Parks: America's Best Idea has received generally positive reviews from television critics.