DNA barcoding is a technique that uses standard short pieces of DNA or also known as DNA barcodes whose ability has been tested to distinguish at the species level. One of the DNA barcodes in plants is the DNA barcode on the matK gene. The purpose of this study was to analyze the DNA barcode sequences in the matK gene area of petai (Parkia speciosa) taken from Siak Hulu District, Kampar Re…