Below, courtesy of Haiti Xchange, is a list of missionary organizations active in Haiti. I do feel that all missionaries should have to sign up to an interfaith Code of Conduct - Like Sphere standards (www.sphereproject.org) but for mission work.

Faith in Action, Inc
http://www.faithinactionworldoutreach.com/aboutus.html
For New Missions
House of Compassion
Aslan Youth Ministries http://www.aslanyouth.org/haiti/index.html
Beyond Borders
House of Bread
Harvest International
Haiti Lutheran Missions
Grace Mission to Haiti
International Missions Outreach
MROH - Mission Reach Out Haiti
Northwest Haiti Christian Mission
Haitian Christian Mission
Living Hope Haiti Christian Mission
Missions Of Love
Mission of Hope Haiti
Red Quarry Christian Church
Haitian Christian Foundation
Baptist Haiti Mission
Grace Missions International
New Jerusalem Baptist Mission
OMS International
Living Hope Mission
House of Blessings
For Haiti With Love
Kids Alive International
Angel Missions
Haiti Gospel Missions
Genesee Conference Missions Promotion Team
Christ's Mandate For Missions
Ray of Hope Street Ministry
Southeast Christian Church
Christian Missionary Anglican Communion (CMAC)
North Haiti Christian University
The Christian & Missionary Vision
Christian Mission of Pignon
Hopital Evangelique
Bowling Green Christian Church
Christian Light of Haiti
Quisqueya Christian School,
World Gospel Mission
UCNH - Université Chrétienne du Nord d’Haïti
Liberty Christian
Eustis Christian
Port St. John Christian
Lakewood Baptist Church
Mission Aviation Fellowship
Chalet Orphange
New Alliance Ministries
the Lively Stone Training School
CCS (Christian School)
Christian Haitian Outreach
HIS Home for Children
For His Glory
Heart Line Ministries
Three Angels Childrens Relief
Petite Ange de Chantel
Bethany Christian Adoptions
God's Littlest Angels
Christian Adoption Service
Haitian Angels
Cazeau Christian Orphanage
Mercy House
Starfish Ministries Orphanage
Christian Missionary Fellowship (CMF)
Christian Child Care International
Avoca Christian Church
Sturtevant Chapel
Baptist World Alliance
JEMS Ministry - Japanese Evangelical Missionary Society
Bethesda Christian Angel Home
Aquin Haiti Project
Bethel Orphanage
Calvary Temple
Canadian Economic Development Associates
Chapelle de la Trinité
Christ Gospel Church
Christianville
CRS-HAVA
Den School
Eglise Baptiste
Madeira Presbyterian Church
Living Word of Faith Fellowship
Sharing Christ's Love Orphanage
MEBSH - Evangelical Baptist Mission of South Haiti
Haïti Partnership