This study was conducted with the express attention of adding to the existing theory of entrepreneurship literature relating to immigrant entrepreneurship. It attempt to better understanding the motivation of Acehnese immigrant entrepreneurs to start business in Malaysia and the success factors contributing to their business by adopting the grounded theory approach. The qualitative method was utilized to this study. The data get from the success Acehnese immigrant entrepreneurs in Malaysia. From the results shown that motivation of the Acehnese immigrant entrepreneurs to do business in Malaysia due to economic depression, see the opportunity in the business, encouraged by friend, desire to generate more income and also inspired by friends' success. Entrepreneurs' success factors were work experience and personal characteristic, while enterprise successes are measured by survivability and expansion of businesses. All respondent want to go back to Aceh someday if the condition is better