Van Leer died on Friday and had been hospitalised after returning from Germany, where she attended the Berlinale film festival last month, Carol Dreyfus, who worked with her, said yesterday.
Born in Romania, Van Leer moved to Israel and studied at Hebrew University where she met her future husband, Dutch filmmaker and engineer Wim van Leer. They founded Israel's first cinema club in the 1950s.
The two travelled extensively, collecting movies from around the world, which led to her founding the Israel Film Archives.
Van Leer was awarded the Israel Prize in 2004 for her life's achievements and the President's Medal last year.
She was an advocate of peace, inviting Iranian film-makers to Jerusalem and supporting Palestinian cinema.
"My aim in life is to get the largest number of people to love cinema, and I will continue doing that as long as I have the strength," she said some months ago.