Islamic Center of Orange County, Muslim religious center in Garden Grove, United States.

The Islamic Center of Orange County, also known as the Islamic Society of Orange County, is a mosque complex on about 5.2 acres in Garden Grove, California. It is one of the first Muslim centers established in Southern California and one of the largest in the Western Hemisphere, serving almost 7,000 worshipers. Its director is Dr. Muzammil Siddiqi, a scholar of comparative religion with a Ph.D. from Harvard University.

The center was founded in 1976 and stands as one of the first Muslim institutions in Southern California. This establishment marked a turning point for the Muslim community in the region.

The center offers Islamic education programs and Quranic study classes for the local Muslim community. These learning opportunities form an important part of daily religious practice for visitors and members.

The center is located at an easily accessible site and holds daily prayers along with regular Friday gatherings. Visitors should check prayer times beforehand since these vary depending on the season.

The center's director, Dr. Muzammil Siddiqi, is a scholar of Comparative Religion who earned his Ph.D. from Harvard University. The site covers about 5.2 acres in Garden Grove, and the Islamic Center of Irvine is a neighboring institution.