| Name | Deductibility Code |
| Affiliation for the Preservation of Shakespeare and Federated Club Rms | -- |
| Association of Christian Texas Sportsmen | -- |
| Bartoskewitz Farm Foundation | 4 |
| Buck Fever Bass Fever Inc. | -- |
| Christian Fellowship Baptist Church | -- |
| Community Council of South Central | -- |
| County Line Volunteer Fire Department and First Responders | -- |
| Crossroads Church Seguin Inc. | -- |
| Deliver the Word Ministries | -- |
| East Texas Diocese Church of Our Lord Jesus Christ | -- |
| Elm Creek Methodist Cemetery Association | 6 |
| Emanuels Lutheran Church of Seguin Texas | -- |
| Emmett and Geri Donegan Foundation | 4 |
| Evangelistic Ambassador Missions Inc. | -- |
| First United Methodist Church Foundation Inc. Seguin Texas | -- |
| Friends of Seguin & Guadalupe County Public Library | -- |
| Fundacion Internacional La Casa De Mi Padre Corp | -- |
| Genesis Christian Academy Inc. | -- |
| Genesis Too Foundation Inc. | -- |
| Gold Battalion Booster Club | -- |
| Good News Fellowship Church Incorporated | -- |
| Good Shepherd Evangelical Church | -- |
| Gorge Preservation Society | -- |
| Grace Lutheran School Inc. | -- |
| Guadalupe Blanco River Trust | -- |
| Guadalupe County Childrens Advocacy Center Inc. | -- |
| Guadalupe County Childrens Lodge | -- |
| Guadalupe County Early Childhood Intervention Inc. | -- |
| Guadalupe County Fair Association | -- |
| Guadalupe County Geneological Society | -- |
| Guadalupe County Humane Society | -- |
| Guadalupe County Mental Health- mental Retardation Agency Inc. | -- |
| Guadalupe County Ministerial Association | -- |
| Guadalupe Regional Medical Foundation | -- |
| Guadalupe Valley Christian Counseling Inc. | -- |
| Guadalupe Valley Family Violence Shelter Incorporated | -- |
| Herman Cramer Evangelistic Association | -- |
| Hill Country Greyhound Adoption | -- |
| Iglesia Mision De Fe Antioquia | -- |
| J Cs Lighthouse for Children | -- |
| Jenna Kay Patek Scholarship Foundation | -- |
| Juan N Seguin Memorial Committe Inc. | -- |
| Living Waters Worship Center | -- |
| Martin Luther King Jr Planning Committee | -- |
| Mediation Association of Guadalupe County Inc. | 4 |
| Mid-Texas Symphony Society | -- |
| Mitchell E Kolenovsky Evangelistic Association Inc. | -- |
| Motivational Institute of Texas | 4 |
| New Berlin Volunteer Fire Department | 6 |
| Panther Posse Booster Club | -- |
| Precious Life Crusade Teen Suicide Prevention | -- |
| Public Library Foundation | -- |
| Roland & Jane Blumberg Foundation | 4 |
| Rural Area Parenting Program Services | -- |
| San Geronimo Cemetery Assn | 6 |
| Sand Hills Volunteer Fire Department Inc. | -- |
| Schumannsville Cemetery Association | 6 |
| Secret Witness Committee of Guadalupe County | -- |
| Seguin Area Recovery Inc. | -- |
| Seguin Citizens Police Academy Alumni Association | -- |
| Seguin Citizens Scholarship Association Incorporated | -- |
| Seguin Conservation Society | -- |
| Seguin Education Foundation Inc. | -- |
| Seguin FFA Ag Boosters | -- |
| Seguin High School Band Boosters Inc. | -- |
| Seguin Housing Development and Management Corporation | -- |
| Seguin Outdoor Learning Center | -- |
| Seguin Parent Teacher Community | -- |
| Seguin Police Activity League | 4 |
| Seguin Police Youth Scholarship Association | -- |
| Seguin Pregnancy Center | -- |
| Seguin Rotary Foundation Inc. | -- |
| Seguin Security Preparedness Foundation | -- |
| Seguin Sports Booster Club | -- |
| Seguin Tri-Party Club | -- |
| Seguin Youth Services Inc. | -- |
| Seguin-Guadalupe County Activity Center Home of the Seguin Boys Clu | -- |
| Seguin-Guadalupe County Heritage | 4 |
| Seguin-Guadalupe County Public Library Special Funds Corporation | -- |
| Seguin-Guadalupe County Senior Citizens Center | -- |
| Shs Njrotc Booster Club | -- |
| Smokey Joe Williams Memorial Fund | -- |
| South West Pride Inc. | -- |
| Southern Animal Rescue Association | -- |
| Sovereign Grace Baptist Church | -- |
| St. Andrews Episcopal Church Foundation Inc. | -- |
| St. Anns Circle | -- |
| St. James Catholic School Capital Fund Inc. | -- |
| Teatro De Artes De Juan Seguin Theatre of Arts Ofjuan Seguin | -- |
| Teddy Buerger Foundation | 4 |
| Texas Agricultural Education and Heritage Center | -- |
| The Emmett G Donegan Foundation | 4 |
| The Missionary Society of San Miguel | -- |
| Todays Girls Tomorrows Women Incorporated | -- |
| Wildlife Refuge & Sanctuary Silver Wolf | -- |
| Worship Anointed Ministries | -- |