| Conventional Long Name: | Principality of Najran |
| Empire: | Edit |
| Government Type: | Principality |
| Year Start: | 1633 |
| Year End: | 1934 |
| P1: | Yemeni Zaidi State |
| S1: | Saudi Arabia |
| Flag S1: | Flag of Saudi Arabia (1932–1934).svg |
| Image Map Caption: | Najran (lime, down south) in Arabia in 1918. |
| Capital: | Najran |
| Common Languages: | Arabic |
| Religion: | Ismaili Shia Islam |
| Leader1: | Muhammad ibn Isma'il Al Makrami |
| Leader4: | Ali bin Muhsin Al Shibami[1] |
| Year Leader1: | 1677–1717 |
| Year Leader4: | 1912–1934 |
| Title Leader: | Da'i |
| Today: | Saudi Arabia |
The Principality of Najran was a state that existed in the Arabian peninsula from 1633 to 1934. It originated as an Islamic ecclesiastic principality under Yemeni suzerainty in 1633, although it later came under Ottoman influence.[2] Najran opposed a Yemeni rebellion against the Ottomans in the 1880s.[3] In the Saudi-Idrisi treaty of 1920, the Emirate of Nejd and Hasa officially laid claim to the territories of Najran, and in 1921 the Ikhwan militia invaded Najran.[4] The Mutawakkilite Kingdom of Yemen also had ambitions in Najran, and thus attempted its own conquest in 1924.[5] In the winter of 1931/1932, Yemeni forces once again attempted to take Najran, but were expelled by the Saudis in 1932.[6] In November 1933, Yemeni forces occupied Najran.[7] In 1934, following the Saudi-Yemeni War, Najran's independence definitively ended when Yemen renounced its claims to Najran and the principality was annexed into Saudi Arabia.