Herta Müller, the Romanian-born German novelist and essayist who writes of the oppression of dictatorship in her native country and the unmoored existence of the political exile, won the 2009 Nobel Prize in Literature on Thursday.

Announcing the award in Stockholm, the Swedish Academy described Ms. Müller as a writer “who, with the concentration of poetry and the frankness of prose, depicts the landscape of the dispossessed.” Her award coincides with the 20th anniversary of the fall of Communism in Europe.

Ms. Müller, 56, emigrated to Germany in 1987 after years of persecution and censorship in Romania. She is the first German writer to win the Nobel in literature since Günter Grass in 1999 and the 13th winner writing in German since the prize was first given in 1901. She is the 12th woman to capture the literature prize. But unlike previous winners like Doris Lessing and V. S. Naipaul, Ms. Müller is a relative unknown outside of literary circles in Germany.

She has written some 20 books, but just 5 have been translated into English, including the novels “The Land of Green Plums” and “The Appointment.”