The Faisal–Weizmann Agreement was a 3 January 1919 agreement between Emir Faisal, the third son of Hussein ibn Ali al-Hashimi, King of the short-lived Kingdom of Hejaz, and Chaim Weizmann, a Zionist leader who had negotiated the 1917 Balfour Declaration with the British government, signed two weeks before the start of the Paris Peace Conference. Together with a letter written by T. E. Lawrence in Faisal's name to Felix Frankfurter in March 1919, it was one of two documents used by the Zionist delegation at the Peace Conference to argue that the Zionist plans for Palestine had prior approval of Arabs.

The agreement was presented to Faisal in his room at the Carlton Hotel on 3 January in English, which Faisal could not read, and its contents were explained to Faisal by Lawrence as the sole translator. Faisal signed the document in the same meeting, without consulting his advisors awaiting him in a separate room, but added a caveat in Arabic next to his signature, such that Faisal considered the agreement was conditional on Palestine being within the area of Arab independence. The Zionist Organization submitted the Agreement to the Paris Peace Conference without the caveat.

Yoav Gelber described the document as "of propaganda value only", since it quickly became clear that Faisal's conditions would not be met.