The Islamic Society of Boston (ISB) is a vibrant and engaged American non-profit organization that adheres to Islamic principles. It owns and operates two mosques (masjids): the ISB mosque, located at 204 Prospect Street, Cambridge, Massachusetts, which serves approximately 300 people at weekly Friday prayers (jum’ah); and the ISB Cultural Center (ISBCC), currently the largest mosque in New England, located in the historic inner-city neighborhood of Roxbury, Massachusetts, on 100 Malcolm X Blvd.

The ISBCC serves approximately 1,700 congregants at Friday prayers each week. On major Islamic holidays (Eids), in collaboration with multiple other local mosques, ISB holds multiple sessions to accommodate approximately 10,000 worshipers. The ISB also owns residential property as part of its endowment (waqf). For preserving the Cambridge property’s original architecture, the ISB won the Preservation Award from the Cambridge Historical Commission in 2023.

Our History:  A Story of American Muslim Unity

Our Mission & Vision

ISB’s vision is to build a community of leaders rooted in the Islamic tradition, committed to American ideals, and empowered to serve the common good. A diverse and substantial number of Muslims in Massachusetts helped establish and develop the ISB organization so it can fulfill its mission to teach and live Islam in America.

Our Core Values

• Compassion
• Integrity
• Transparency
• Excellence

Festive decorations adorning the main entrance for the grand opening (2009). Photo: ISBCC Facebook Page.