Wild Wild West is a 1999 American steampunk Western film co-produced and directed by Barry Sonnenfeld and written by S. S. Wilson and Brent Maddock alongside Jeffrey Price and Peter S. Seaman, from a story penned by brothers Jim and John Thomas. Loosely adapted from The Wild Wild West, a 1960s television series created by Michael Garrison, it is the only production since the television film More Wild Wild West (1980) to feature the characters from the original series.

The film stars Will Smith (who previously collaborated with Sonnenfeld on Men in Black two years earlier) and Kevin Kline as two U.S. Secret Service agents who work together to protect U.S. President Ulysses S. Grant (Kline again, in a dual role) and the United States from all manner of dangerous threats during the American Old West. The film features a supporting cast consisting of Kenneth Branagh, Salma Hayek, Ted Levine, and M. Emmet Walsh, as well as an orchestral film score by Western film score veteran Elmer Bernstein and extensive visual effects courtesy of Industrial Light & Magic.

Released theatrically in the United States on June 30, 1999 by Warner Bros. and produced on a $170 million budget (making it one of the most expensive films ever made when adjusting for inflation at the time of its release), Wild Wild West was a commercial disappointment, grossing only $113.8 million domestically and $108.3 million overseas for a worldwide total of $222.1 million. Receiving negative reviews from critics, the film was nominated for eight Razzies and won five at the 20th Golden Raspberry Awards, including Worst Picture and Worst Original Song (for the song "Wild Wild West" by Smith).