This research was conducted in Kampar Regency Which aims to find out the leading sectors in Kampar Regency, as well as to determine changes in the economic structure in Kampar Regency. The research uses secondary data in the form of time series of the Gross Regional Domestic Product (PDRB) of Kampar Regency and Riau Province in 2015-2019. The analytical tool used in this research are: 1). …