Orobanche cumana Wallr. is a holoparasitic plant for only sunflower hence it is called as sunflower broomrape. Yield loss created by O. cumana which is generally 50 % can reach to 100 %. In this study it was planned to perform molecular characterization of O. cumana germplasm as nine locations of Thrace region obtained from Trakya Agricultural Research Institute by using Single Nucleotide Polymorphism (SNP) markers widely used in plant breeding programs in Competitive Allele Specific PCR (KASP) assay which is a fluorescent tagged allele specific PCR method based economic reliable and easily repeatable genotyping technology. Databases and literature were scanned to spot variations on O. cumana genome which is not known clearly. So far four SSR (Simple Sequence Repeat) marker ( Ocum-197 Ocum-006 Ocum-023 and Ocum-151 ) regions showing polymorphic pattern were used for searching possible SNPs. Primer pairs were designed for amplification of the regions possibly having SNPs and PCR amplifications with these primer pairs were performed and 1 candidate deletion was detected on the amplicon which was amplified by Ocum-197 SSR marker. Following the deletion was converted to KASP primers and KASP assay was performed. The deletion marker Del-197 has grouped the samples from nine locations in the resulting allelic discrimination plot and infestation was performed according to this grouping As a conclusion Del-197 is considered as a selective marker for the ability to rapidly assay allelic variation at DNA markers for O. cumana populations that have effects on infestation results were evaluated as races F G H and I in Thrace region.