Ada Chaseliov (born March 30, 1952, in Rio de Janeiro, Brazil – died October 27, 2015) was a Brazilian actress known for her work in theater, film, and television. She trained at the renowned theater school O Tablado and made her film debut in Um Virgem na Praça (1973).

The following year, she landed a small role in the telenovela Supermanoela, written by Walther Negrão for TV Globo. Over the decades, Ada became a familiar presence on Brazilian television, especially through her long-standing collaborations with writer Sílvio de Abreu. She stood out in roles such as the jealous and tormented Manuela in Guerra dos Sexos (1983), and in Belíssima (2005).