Joshua Micah Jesajan-Dorja Marshall (born February 15, 1969) is an American journalist and blogger who founded Talking Points Memo. A liberal, he presides over a network of progressive-oriented sites that operate under the TPM Media banner. In 2008, they averaged 400,000 page views on weekdays and 750,000 unique visitors per month.

Marshall and his work have been profiled by The New York Times, the Los Angeles Times, the Financial Times, National Public Radio, The New York Times Magazine, the Columbia Journalism Review, Bill Moyers Journal, and GQ. In 2007, Hendrik Hertzberg, a senior editor at The New Yorker, compared Marshall to the influential founders of Time magazine, saying: "Marshall is in the line of the great light-bulb-over-the-head editors. He's like Briton Hadden or Henry Luce. He's created something new."

Marshall was born in St. Louis, Missouri. Marshall's father was a professor of marine biology. His mother died when he was young.

He is a graduate of the Webb Schools of California and Princeton University and earned a PhD in American history from Brown University. In the mid-1990s, Marshall designed websites for law firms and published an online news site about Internet law, which included interviews with prominent scholars such as Lawrence Lessig.

Marshall began writing freelance articles about Internet free speech for The American Prospect in 1997 and was soon hired as an associate editor. He worked for the Prospect for three years and in 1999 moved to D.C. to become their Washington editor. He often clashed with the top editors at the Prospect, over both ideology and the direction of the website.

Inspired by political bloggers such as Mickey Kaus and Andrew Sullivan, Marshall started Talking Points Memo during the 2000 Florida election recount. "I really liked what seemed to me to be the freedom of expression of this genre of writing," Marshall told the Columbia Journalism Review. "And, obviously, given the issues that I had with the Prospect, that appealed to me a lot."

He left his job at the Prospect early in 2001 and continued to blog while writing for The Washington Monthly, The Atlantic, The New Yorker, Salon.com, and the New York Post. In 2002, Marshall used Talking Points Memo to report on Trent Lott's controversial comments praising Strom Thurmond's 1948 presidential run as a segregationist. According to Harvard Kennedy School, Marshall was instrumental in fueling the ensuing scandal that eventually led to Trent Lott's resignation as Senate Minority Leader.

As a result of the Lott story, traffic to Talking Points Memo spiked from 8,000 to 20,000 page views a day. In the fall of 2003, as people focused on the failure to find WMD's in Iraq, there was a new surge of traffic to the site; "I remember there being peak days of 60,000-page views, which was really incredible." Marshall started selling ads on his site and by the end of 2004 was earning $10,000 a month, making him one of a handful of what The New York Times Magazine dubbed "elite bloggers" who earned enough money to make blogging a full-time occupation.