Rūta Vanagaitė (born January 25, 1955) is a Lithuanian theatre critic, writer, public relations specialist, journalist and a public figure of Vilnius. She is a controversial figure, mostly known for her efforts to raise public awareness about participation of Lithuanians in the Holocaust.

Vanagaitė was born on January 25, 1955, in Šiauliai. From 1961 to 1972 she studied in secondary school no. 22 in Vilnius.

In 1978 she graduated from the Russian Institute of Theatre Arts where she studied drama, and began publishing her theatre review articles before graduation. In 1978 she was appointed head of the theatre, cinema and TV section in Kultūros barai [lt] monthly magazine, and later worked at the Literatūra ir menas newspaper. From 1985 to 1989, she lived in Helsinki where she worked in the library of the University of Helsinki and wrote articles on social and cultural topics for Helsingin Sanomat newspaper.

In 1989, she returned to Lithuania and became the art director of the National Youth Theatre. Since 1991 she was organizing annually the international theatre festival LIFE. In 1999—2001 she was an advisor to prime minister Rolandas Paksas on culture and communication. In 2001 she founded a public relations agency Acta Publica. Since 2006, she is a director of Vilko valia agency.

In 2015, she met Efraim Zuroff who discussed with her the extermination of the Lithuanian Jews during the Holocaust. This was the beginning of her work on writing the book Mūsiškiai. Kelionė su priešu (Our People. A Journey with the Enemy),^[1] which was published a year later, and was translated into multiple languages (English, Polish, Russian, Hebrew). The book discusses the problem of participation of common Lithuanians in the execution of Jews and robbing of their property, a topic very much unpopular in the modern Lithuania. She claims to have been shunned by some of her relatives and friends after the publication of the book.^[2]

She self published a book in cooperation with German historian Christoph Dieckmann about the Holocaust How Did It Happen?, which is expected to be published in US 2021.^[3]

Apart from her native Lithuanian, she is fluent in Russian, English, Finnish, Polish Hebrew and French

• Pareigos metas. Vilnius: Alma littera, 2014. — 300 p.
• Ne bobų vasara. Vilnius: Alma littera, 2015. — 166 p.
• Jis. Vilnius: Alma littera, 2016. — 240 p.
• Mūsiškiai (co-authored with Efraim Zuroff) – translated in various languages: Our People (English), Nasi (Polish) etc.

Kaip tai įvyko? Christoph Dieckmann atsako Rūtai Vanagaitei. 2020 Renkuosi vasarą. 2021