This study aims to identify the dominant sector in Pemalang District. The analysis was carried out by comparing the 2010 GRDP of Pemalang District Based on Constant Price and the 2010 GRDP of Central Java Province Based on Constant Price for the period 2010-2016, using the Location Quotient (LQ), Shift Share, Klassen Typology, Metode Rasio Pertumbuhan (GRM), and Overlay analysis approach, it can be concluded that the economic potential of Pemalang Regency are the processing industry, electricity and gas procurement, financial and insurance services, and the company services sector. These four sectors despite experiencing such fluctuative value movements from year to year, but the trends created tend to increase, and indicate that these sectors are the dominant sectors in the economy of Pemalang District.