Darya Nikolaevna Ekamasova (Russian:Дарья Николаевна Екамасова; born 20 May 1984) is a Russian theater and film actress. Her film credits include Once Upon a Time There Lived a Simple Woman (2011), Free Floating (2006) and Celestial Wives of the Meadow Mari (2012). She was also featured in the television mini-series Kuprin. Yama (2014). In the fifth and sixth seasons of The Americans (2017-2018), she plays the role of Sofia Kovalenko.