The Islamic Society of North America promotes unity and leadership among Muslims. The organization, based in Plainfield, Ind., has a large immigrant presence. Contact executive director Ahmed Elhattab.

The Council on American-Islamic Relations says it is the largest advocacy group for Muslims in the U.S. It advocates for Muslims on issues related to civil liberties and justice. Contact communications director Ibrahim Hooper in Washington, D.C.

The American Muslim Taskforce on Civil Rights and Elections promotes civic equality for Muslims and their participation in the American political process. It is an umbrella association of 11 Muslim American groups. Contact Salim Akhtar.

The American Muslim Alliance promotes participation of Muslim Americans in the political process. Agha Saeed is its founder and former chairman.

The Institute of Interfaith Dialog was founded by Turkish Muslim Fethullah Gulen and, though based in Houston, has chapters throughout the South and Southwest.

It is an organization in Chicago with an education center in Morton Grove.  They offer membership services, which include counseling, marriage and funeral arrangements, and prayer sessions.

Congregation Or Atid, a Conservative synagogue in Richmond, Va. conducts a “Switch Day,” when members take the shifts of Christian volunteers at nearby Beth Sholom Nursing Home.

Since 1990, Cedar Village, a retirement and nursing home in Mason, Ohio, has held a “Mitzvah Day” every Dec. 25, in which Jewish staff members volunteer to work for Christian staffers. Contact Rachel Festenstein, director of marketing and community outreach.

The Self-Realization Fellowship, which has headquarters in Los Angeles, follows the teachings of Paramahansa Yogananda (1893-1952) that are based on yoga and on Jesus. The fellowship has temples and meditation centers around the United States.