| Honorific Prefix: | Makhdum |
| Jahaniyan Jahangasht | |
| Birth Name: | Mir Sayyid Jalaluddin |
| Birth Date: | 8 February 1308 |
| Death Place: | Uch, Delhi Sultanate (near Bahawalpur in present-day Punjab, Pakistan) |
| Religion: | Islam |
| Relatives: | Jalaluddin Surkh-Posh (grandfather) Shah Jewna (nephew) |
| Sect: | Sunni Islam |
| Jurisprudence: | Hanafi |
| Tariqaa: | Chishti |
Mīr Sayyid Jalāl ad-Dīn an-Naqwī al-Bukhārī (Persian: {{Nastaliq|میر سید جلال الدین النقوی البخاری; 1308-1384), better known as Jahāniyān Jahāngasht (Persian: {{Nastaliq|مخدوم جہانیاں جہان گشت), was a Punjabi[1] Sufi saint from South Asia.
Jahaniyan Jahangasht was born on 8th February 1308 AD (14 Shaban 707 AH) in Uččh. His father, Sayyid Aḥmad Kabīr, was the youngest son and chosen successor of Jalaluddin Surkh-Posh of Bukhara. His father was a disciple of Rukn al-Dīn Abu ’l-Fatḥ.[2]
He was later given the title of Jahaniyan Jahangasht from which he gained prominence. He travelled to many countries including Kāzarūn, Egypt, Syria-Palestine, Mesopotamia, Balk̲h̲, Buk̲h̲āra, K̲h̲urāsān, and visited Mecca 36 times in his life. He married the daughter of his half-uncle Sadruddin Muhammad Ghawth.[3]
He received his k̲h̲irḳa from Naṣīr al-Dīn Čirāg̲h̲-i Dihlī. Muḥammad b. Tug̲h̲luḳ appointed Jalāl al-Dīn as S̲h̲ayk̲h̲ al-Islām and was granted forty k̲h̲ānaḳāhs in Sīwastān, but left for the Ḥajj. When he returned Fīrūz S̲h̲āh Tug̲h̲luḳ also paid him reverence, and Jalāl al-Dīn would visit Delhi periodically. Jalāl al-Dīn also accompanied the king on his campaign to Ṭhaṭṭā and was a major influence on Fīrūz's religious policies.[4]
He visited Hazrat Pandua, the first capital of the Bengal Sultanate, where he led the janazah of Alaul Haq Pandwi, the court scholar of Bengal. The Jhan Jhaniya Mosque of the 16th-century is said to be named in his honour.[5] Every year, during the urs of Akhi Siraj Bengali, Jahangasht's jhanda is taken from Tabrizi's dargah to Akhi Siraj's mausoleum.[6]
His descendants use the surname Naqvi Bukhari, and belong to the Naurang Jahania family Some of them migrated to Tando Jahania in Sindh creating a sizeable community, whilst others migrated to many other places within the subcontinent.[7] [8] [9] [10]