The Bombay Catholic Sabha found in January 1989 is registered under the Bombay Public Trust Act 1950 and has a membership of over 30,000.

The Sabha was formed to promote the social, economic, political, cultural, educational and general welfare of Christians in particular and the citizens in general.

The Patron of the Sabha is the Archbishop of Bombay. The Sabha has 2 types of membership viz. 'Life' with a membership fee of Rs. 100/- and an entrance fee of Rs. 10/- and 'Annual' with a membership fee of Rs. 10/- and a onetime entrance fee of Rs. 10/-. Membership of the Sabha is restricted to Catholics only.

Over the years, the Sabha has grown from strength to strength and the panorama of services include the 'We Care' Campaign for Kargil, the 'Mumbaites for Orrisa' campaign for the Cyclone victims, 'Gujarat Earthquake Relief' and the 'Campaign for Communal Harmony' during the nerve shattering experiences in Gujarat last year. The Bombay Catholic Sabha (OLGC - Sion Unit) operates as one of the units of the Sabha. This unit since its inception in 1995 has done some splendid work at the local level particularly pertaining to Social Action, Civil and Political Activism and Health.

A highlight of the Sion Unit's activities is the Annual Christmas Tree and Dinner for the Underprivileged held during the Christmas week for the past 3 years.

Following are the Office Bearers of the Managing Committee: You may contact them for membership

Chairman - Jos D'Souza
Vice President - Luis Rodrigues
Secretary - Robert Pereira
Treasurer - Dominic Menezes