Daria Leonidovna Virolaynen, née Reztsova, (Russian: Дарья Леонидовна Виролайнен, Finnish: Darja Leonidovna Virolainen; born 24 January 1989) is a Russian and Finnish biathlete.

Her mother was biathlete and cross country skier Anfisa Reztsova.

Virolaynen debuted at the World Cup on 6 March 2014, when she got second place in the sprint event in Pokljuka.

[1] Earlier in the year Virolaynen had finished third in the pursuit competition at the European Championships.

This Russian biographical article relating to biathlon is a stub.