Najmuddīn-e Kubrā (Persian: نجمالدین کبری) or Najm al-Din Kubra, (Shaykh Abū al-Jannāb Ahmad ibn ‘Umar) was a 13th-century Persian Sufi from Khwarezmia, the founder of the Kubrawiyya or Kubraviyah Sufi order, influential in the Ilkhanid and Timurid. His method, exemplary of a "golden age" of Sufi metaphysics, was related to the Illuminationism of Shahab al-Din Suhrawardi as well as to Rumi's Shams Tabrizi. Kubra was born in 540/1145 and died in 618/1221.