Judi Chamberlin (née Rosenberg; October 30, 1944 – January 16, 2010) was an American activist, leader, organizer, public speaker and educator in the psychiatric survivors movement.

[1] The derogation of her civil liberties that she experienced as an inmate provided the impetus for her activism as a member of the psychiatric survivor movement.

[1] In 1971 she joined the Boston-based Mental Patients Liberation Front (MPLF),[8] and she also became associated with the Center for Psychiatric Rehabilitation at Boston University .

[7] Her affiliation with this center facilitated her role in co-founding the Ruby Rogers Advocacy and Drop-in-Centers,[7] which are self-help institutions staffed by former psychiatric patients.

[2] The latter is also an ex-patient run organization that provides information, technical assistance, and support to users and survivors of the psychiatric system.

[8] Its mission statement declares its intent is to "carry a message of recovery, empowerment, hope and healing to people who have been labeled with mental illness".

[11] She was also involved with the National Association for Rights Protection and Advocacy and was an influential leader in the Mad Pride movement.

During this period she also served on the Panel of Experts advising the United Nations special rapporteur on disability, on behalf of WNUSP in its role as a Non-governmental organization, representing psychiatric survivors.

[21] Chamberlin met Chabasinski, also an early member of the psychiatric survivor movement, in 1971 at the initial meeting of the Mental Patients Liberation Project in New York City.