The Parośla I massacre was committed during World War II by the Ukrainian Insurgent Army (UPA) under the command of Hryhorij Perehijniak "Dowbeszka-Korobka" on 9 February 1943 against the ethnic Polish residents of the village of Parośla (named Parośla I) in the Nazi-controlled Reichskommissariat Ukraine. It is considered a prelude to the ethnic cleansing of Poles in the Volhynia region by the UPA, and is recognized as the first mass murder committed by the Ukrainian Insurgent Army in the area. Estimates of the number of victims range from 149 to 173.