A number of advocacy groups and faith-based institutions have issued support for the End Modern Slavery Initiative Act, including the Alliance to End Slavery & Trafficking (ATEST), International Justice Mission (IJM), United Way Worldwide, Freedom House, Rotary International, the End It Movement, and Circle of Friends, Inc., among others. A full list is included below.

Africa Faith & Justice Network
Alliance to End Slavery and Trafficking (ATEST)
Armenian Orthodox Church
Auburn Seminary
Blauvelt Dominican Sisters
Bread for the World
Center on Conscience & War
Church of the Brethren, Office of Public Witness
Church World Service
Circle of Friends: Living Water for Girls
Coalition of Immokalee Workers (CIW)
Coalition to Abolish Slavery & Trafficking (CAST)
Columban Center for Advocacy and Outreach
Congregation of the Infant Jesus
Disciples Women
Dominican Center at Marywood
Dominican Leadership Conference
Dubuque Sisters Against Human Trafficking
End Child Prostitution and Trafficking (ECPAT-USA)
End Slavery Now
End HT Now
EPJ Fund
Franciscan Action Network
Franciscan Sisters of the Poor
Free the Slaves
Freedom For All
Freedom House
Futures Without Violence
Girls Inc.
Global Alliance Interfaith Networks
Global Justice Institute
Hilton Worldwide
Human Rights First
IHM Sisters – Leadership Council
Interfaith Center on Corporate Responsibility
International Justice Mission
Jonah House
Leadership Conference of Women Religious
Leadership Team of the Felician Sisters of North America
Lutheran Services in America
Made in a Free World
Maryknoll Office for Global Concerns
Medical Mission Sisters
Metropolitan Community Churches
Missionary Servants of the Most Holy Trinity
Missionary Sisters of the Immaculate Conception
Monarch Wings Ministries
National Coalition of American Nuns
National Domestic Workers Alliance (NDWA)
National Network for Youth (NN4Y)
National Underground Railroad Freedom Center
NETWORK, A National Catholic Social Justice Lobby
Our Lady of Victory Missionary Sisters
Pax Christi USA
Polaris
Promoter of Justice: Dominican Sisters ~ Grand Rapids
Rabbinical Assembly of Conservative Judaism
Religious of the Sacred Heart of Mary, Western American Province
Rena & Mark Norcross Family Foundation
Rotarians Against Child Slavery
Safe Horizon
Sinsinawa Dominicans
Sisters of Charity
Sisters of St. Dominic
Sisters of St. Joseph of Carondelet
Sisters of St. Joseph-Baden
Sisters of St. Mary of Namur
Sisters of the Congregation of Notre Dame American Province Peace and Justice Office
Sisters of the Holy Cross
Sisters of the Holy Family
Sojourners
Soka Gakkai International-USA (Buddhist Association)
Solidarity Center
Step Selling Our Kids
Street Hope TN
Task Force to Eradicate Modern Slavery (TFEMS)
The Episcopal Church
Trinity Health
T’ruah: The Rabbinic Call for Human Rights
Truckers Against Trafficking
U.S. Catholic Sisters Against Human Trafficking
U.S. Committee for Refugees and Immigrants
United Church of Christ, Justice and Witness Ministries
United Methodist Women Washington Office of Public Policy
United Way Worldwide
Verité
Vital Voices Global Partnership
Women of Vision/World Vision
World Relief
World Vision
YWCA USA