Katarzyna (Kasia) Laska (born 26 May 1979 in Tomaszów Mazowiecki, Poland) is a Polish singer best known from the Musical Theatre Roma where she starred in the lead role of Kim in the musical Miss Saigon, adult Wendy in the musical Peter Pan and Frenchy in the musical Grease.
She also played Maria in the musical West Side Story at the Musical Theatre Capitol in Wroclaw.
Kasia has also lent her voice to Polish versions of several animated films: The Little Mermaid, Return to Never Land, Winx Club, Brother Bear, The Jungle Book 2 and Enchanted, to name but a few.
Among her TV roles are Daring Do and Princess Cadance in My Little Pony: Friendship is Magic and Katie in Total Drama Island.
Kasia portrayed the singing voice of Elsa, the Snow Queen in performing Let it go (in Polish, Mam te moc) in the Disney animated film Frozen and now the latest edition to the Frozen series, Frozen 2 where Kasia sings "Chce uwierzyc snom", the Polish version of "Into the Unknown" made popular by Panic! At the Disco.