Siennica Królewska Duża [ɕɛnˈnit͡sa kruˈlɛfska ˈduʐa] is a village in the administrative district of Gmina Siennica Różana, within Krasnystaw County, Lublin Voivodeship, in eastern Poland. It lies approximately 9 kilometres (6 mi) east of Krasnystaw and 58 km (36 mi) south-east of the regional capital Lublin.