Julia Ioffe (English: /ˈjɒfi/; Russian: Юлия Иоффе, romanized: Yuliya Ioffe; born October 18, 1982) is a Russian-born American journalist. Her articles have appeared in The Washington Post, The New York Times, The New Yorker, Foreign Policy, Forbes, Bloomberg Businessweek, The New Republic, Politico, and The Atlantic. Ioffe has appeared on television programs on MSNBC, CBS, PBS, and other news channels as a Russia expert. She is the Washington correspondent for the website Puck.

Ioffe was born in Moscow, to a Russian Jewish family. On April 28, 1990, when she was 7 years old, she and her family immigrated to New York City in the United States. They settled in Columbia, Maryland, where she grew up. Ioffe attended Beth Tfiloh Dahan Community School from which she graduated in 2001.

After originally planning to be a doctor, Ioffe graduated with a degree in Soviet history from Princeton University in 2005. Her thesis, "Selling Utopia: Soviet Propaganda and the Spanish Civil War", was supervised by Jan T. Gross.

While at Princeton, Ioffe was vice-president of the Princeton Israel Public Affairs Committee. In a college newspaper column published in 2003, she was quoted as supporting Israel's "methods of defense against terrorism", including the construction of the Israeli West Bank Wall. According to Ioffe, the wall was "necessary for Israel to protect its citizens against suicide bombers".

Ioffe worked for the Columbia Journalism School's Knight Case Studies Initiative.

Ioffe is the Washington correspondent for the website Puck.

In 2009, Ioffe won a Fulbright Scholarship to work in Russia. Ioffe spent three years in Moscow, from 2009 to 2012, working as a correspondent for The New Yorker and Foreign Policy.

Ioffe was a finalist for the Livingston Award for her 2011 profile of Alexei Navalny, then a lawyer and anti-corruption activist.