Joseph Paul Trippi (born June 10, 1956) is an American political strategist. A member of the Democratic Party, Trippi most notably served as campaign manager of former Vermont governor Howard Dean's 2004 presidential bid, and has served as a political commentator for CNN since 2018. He has worked on a number of prominent gubernatorial and United States Senate campaigns, including the successful bids of Jerry Brown for Governor of California and Doug Jones for U.S. Senate in Alabama.

Trippi was born in Jamestown, New York and raised in Los Angeles, California. Trippi began his career in the mid-1970s working on several local elections in San Jose, California while he was attending San Jose State University, before leaving college a few credits shy of graduation to join the Ted Kennedy 1980 presidential campaign. During college he was a member of Sigma Nu fraternity.

Trippi served as Deputy Campaign Manager for Los Angeles Mayor Tom Bradley's successful reelection bid in 1981 and his unsuccessful run in the 1982 California gubernatorial election. During Bradley's gubernatorial campaign, Trippi installed one of the first in-house computers for a political campaign, the DEC-PDP11. Trippi used it for fundraising and targeting.

In 2010, Trippi was a senior strategist and media consultant in Jerry Brown's successful run for reelection as California Governor. The Brown ads Trippi & Associates produced received four Pollie awards for excellence in political media and Time named one ad, "Echo," the best ad of 2010. Andrew Romanoff, who challenged the incumbent Senator Michael Bennet in the 2010 United States Senate election in Colorado, announced his campaign had hired Trippi as one of its four new consultants.

Trippi worked on a number of recent House victories for Representatives Ro Khanna, Tulsi Gabbard, Janice Hahn, Mark Takano, and Seth Moulton. Moulton, a former Marine from Massachusetts, won in a shocking come-from-behind upset. The campaign overcame millions in outside spending to beat 18-year incumbent John Tierney in the primary and Richard Tisei in the targeted general election. In a 2015 article from The Boston Globe, Moulton recalled nationally renowned pollster Mark Mellman telling him to quit the race because it would be "statistically impossible" to win.

In 2017, Trippi worked on the special election to fill the Senate seat vacated by Jeff Sessions on behalf of former US Attorney for the Northern District of Alabama Doug Jones. In his victory speech, Jones referred to Trippi as the "greatest political consultant in the world".

After the historic come-from-behind victory in Alabama, Trippi worked for Democratic candidates in both of the 2018 United States Senate elections in Mississippi Trippi worked with Howard Sherman for seat held by incumbent Roger Wicker, and with former Secretary of Agriculture Mike Espy in the special election for the Senate seat vacated by Thad Cochran who decided to resign for health reasons. In 2018, Trippi worked on the campaign of Janet Garrett, a retired schoolteacher and union leader running to unseat the conservative founder of the Freedom Caucus, U.S. Rep. Jim Jordan, in Ohio's 4th congressional district.

Trippi served as senior adviser to Senator Doug Jones and Senate candidate Teresa Tomlinson.^{[citation needed]}