Wenche Elena Riosianu Medbøe (born July 3, 1940) is a Norwegian actress.
Medbøe studied at the Oslo National Academy of the Arts from 1959 to 1963 and began her career at NRK's Television Theater, where she worked from 1963 to 1965.
There her roles included Minne in Arild Brinchmann's production of Leck Fischer's Frisøndag (1961), Borghild in Cora Sandel's Kranes konditori (1963), and Ariel in William Shakespeare's The Tempest (Norwegian title: Stormen, 1964).
In her early years at the Norwegian Theater, her roles included Electra in Oresteia (1970), Thea Elvsted in Henrik Ibsen's Hedda Gabler (1971), Gerd in Ibsen's Brand (1973), Nina in Anton Chekhov's The Seagull (1974), the title role in Jean Giraudoux's Ondine, Siri von Essen in Per Olov Enquist's Tribadernas natt (1976), and the title role in August Strindberg's Miss Julie (1978).
In 2010, after 41 years at the Norwegian Theater, she gave her farewell performance in Oscar og den rosa dama.