Terje Rød-Larsen (born 22 November 1947) is a Norwegian diplomat, politician, and sociologist.

Rød-Larsen came to wide international prominence as a key figure in the 1990s negotiations that led to the Oslo Accords—the first-ever agreements between Israel and the Palestine Liberation Organization (PLO)—when he served as the director of the Fafo institute. He is played by the actor Andrew Scott in the film Oslo, based on the play of the same name.

In 1993, Rød-Larsen was appointed Ambassador and Special Adviser for the Middle East Peace process to the Norwegian Foreign Minister, and the following year, he became the United Nations Special Coordinator in the Occupied Territories at the rank of Under-Secretary-General.

Rød-Larsen briefly served as the Deputy Prime Minister and Minister for Planning and Cooperation of Norway in the Jagland cabinet in 1996. He had to resign after a tax affair regarding him came to public attention.

Rød-Larsen then returned to the United Nations, where he again became an Under-Secretary-General, serving as the UN Special Coordinator for the Middle East Peace Process and Personal Representative of the Secretary-General to the Palestine Liberation Organization and the Palestinian Authority from 1999 to 2004.

From 2004 to 2020, Rød-Larsen has been the president of the International Peace Institute (IPI), based in New York City, adjacent to the United Nations, which the IPI works with extensively. He resigned in 2020 over previously undisclosed links to Jeffrey Epstein.

Rød-Larsen grew up in Bergen and studied social sciences, culminating in a Ph.D. in sociology. He taught at Norwegian universities until 1981, when he helped found FAFO, a research organization funded by the Norwegian Confederation of Trade Unions.

In 1982, Rød-Larsen founded the Fafo Institute for Applied Social Science in Oslo. Initially funded by the Norwegian Confederation of Trade Unions, Fafo later received support from major companies including Orkla, UMOE, Elkem, Coop Norge, Sparebank 1, and Telenor.