The Marwari or Marwadi are an Indian ethnic group that originate from the Rajasthan region of India. Their language, also calledMarwari, is closely related to Rajasthani, which is part of the Western Zone of Indo-Aryan languages, and often subsumed under Rajasthani. The term Marwari once referred to the area encompassed by the former princely state of Marwar, also called the Jodhpur region of southwest Rajasthan in India.

The word Marwar is considered to be derived from Sanskrit word Maruwat, the meaning of maru being ‘desert’. Others believe that word Marwar is made up of Mar from alternate name of Jaisalmer and last part war of Mewar. It has evolved to be a designation for the Rajasthani people in general but it is used particularly with reference to certain jātis that fall within the Baniaethnic category. Those communities, whose traditional occupation has been as traders, comprise the Agarwals, Khandelwals,Maheshwaris and Oswals. Dwijendra Tripathi believes that the term Marwari was probably used by the traders only when they were outside their home region; that is, by the diaspora.