The Banjar are a language group in Indonesia which is almost 100% Muslim, completely unreached (not a single Banjar fellowship of believers yet), and Bibleless
Although they are devout Muslims, the Banjar proudly trace their origins to a legendary Hindu kingdom, the Negara Dipa. In 1526, Banjar Prince Samudera accepted Islam and took the name of Sultan Suriansyah as a condition of receiving help from a Jawa army in overthrowing his uncle. The Banjar people do not look positively upon modern methods and technologies, nor do they mix much with other people groups. This isolation has limited the development of education, health care, sanitation, and water purification.
Source: Joshua Project