Meg Greenfield (December 27, 1930 - May 13, 1999) was a Washington Post and Newsweek editorial writer and a Washington insider known for her wit and for being reclusive. She was influential in a male-dominated world and a close confidante of Post publisher Katharine Graham. She was awarded journalism's highest honor, a Pulitzer Prize for editorial writing, in 1978.

Greenfield was raised in Seattle, where she attended The Bush School. She graduated from Smith College in 1952. She also studied at Cambridge University as a Fulbright Scholar.

Greenfield retired to Bainbridge Island, in her native Washington State, where she wrote a posthumously-published memoir entitled Washington. She never married, something she came to regret.