Masha Gessen (born 1967) is an American-Russian journalist, translator, and nonfiction author. They identify as non-binary and use they/them pronouns.

Born into an Ashkenazi Jewish family in Russia, in 1981 they moved with their family to the United States to escape anti-Semitism. They returned in 1991 to Moscow, where they worked as a journalist, and covered Russian military activities during the Chechen Wars. In 2013, they were publicly threatened by prominent Russian politicians for their political activism and were forced to leave Russia for the United States.

They write in both Russian and English, and has contributed to The New Republic, New Statesman, Granta and Slate. Gessen is a staff writer at The New Yorker, covering international politics, Russia, LGBT rights, and gender issues.