Peter S. Greenberg (born January 20) is the CBS News Travel Editor reporting regularly on The Early Show, its replacement CBS This Morning, and the CBS Evening News. He may be best known as the Travel Editor for NBC's Today, CNBC and MSNBC from 1995 until 2009. Previous to NBC, Peter was Travel correspondent for ABC's Good Morning America from 1988 to 1995. Greenberg is an Emmy Award-winning journalist and television producer in his own right.

Also known as the "Travel Detective"—he has published several books with that moniker—Greenberg was brought to NBC's Today by Jeff Zucker. Previously, Greenberg was a correspondent for Newsweek, among other publications. In addition to his Today duties, Greenberg produces travel segments for America Online, is a contributing editor for Men's Health; produces a radio show, Peter Greenberg Worldwide; and an online travel site, PeterGreenberg.com. He also produces television specials, such as the highly rated "Inside American Airlines: A Week in the Life". Additionally, Greenberg serves as the Travel Ambassador for AARP, offering travel advice to members.

He also produces and hosts a television series called The Royal Tour which aired originally on the Travel Channel. The series featured various heads of state giving Greenberg and viewers a personal tour of their country. It has featured a number of world leaders including New Zealand's Helen Clark, Abdullah II of Jordan, and Peru's Alejandro Toledo. Greenberg was previously the Travel Channel's chief correspondent. The series now airs on PBS, having re-launched in 2010 with Mexico: The Royal Tour with Mexican President Felipe Calderon taking Greenberg on a journey across the country.

Previously, Greenberg served as Vice-President of television development for Paramount, where he helped develop such shows as MacGyver. At MGM, he ran the creative team that developed thirtysomething for ABC.

In addition, Greenberg was a former talk show host on 790 KABC in Los Angeles. In 2012, Greenberg was inducted into the U.S. Travel Hall of Leaders, an award presented by the U.S. Travel Association.