Broomrape (Orobanche clonana Wallr.) is an obligate parasitic plant which feeds on sunflower roots and causes very high yietd losses in sunflower. Due to broomrape problem, production area dropped down by as much as 50% in Turkey during 1956-62. This problem was solved with planting resistant varieties. Flowever, broomrape became a problem again in 1980. This study was conducted at the Thrace Agricultural Research Institute to determine the existing broomrape races in Thrace during 1983-90. Broomrape seeds collected from sunt-lower fields in the region and differentials obtained from Romania were used in this study. It was concluded that broomrape recently seen in the Thrace region was race "E".