Employees, retirees and members of the following companies and organizations are eligible to join TDECU.
- Abshier-Meuth Animal Hospital
- Allied Home Mortgage Capital Corporation
- American Corporate Legal Assistance Association (Voting Members)
- American Overseas Petroleum
- AMOCO Chemical Corporation
- Angleton Danbury Medical Center
- Angleton Independent School District (AISD)
- Baylor Technology Inc.
- Benchmark Electronics Inc.
- Brazosport Memorial Hospital
- Canac Industrial Services Inc.
- Centerline Geophysical Inc.
- Champions Certified Car Care
- Chevron Texaco Corporation
- Chevron-Phillips Chemical Company
- Chippewa Gas Corporation
- City of Lake Jackson
- Coastal Securities
- Collaborative, AIA, LLP
- Columbia-Brazoria Independent School District
- Criterion Investment Management LLC
- Damon Independent School District (DISD)
- Delta X-Ray Inc.
- Devolve Corporation
- Dow Chemical Company
- Dow Environmental Inc.
- Dr. James A. Oevermann & Associates
- Dunn Kacal Adams Pappas & Law P.C.
- EISAI USA Inc
- Employment + Training Centers Inc.
- Fertitta Entertainment
- Fidelity Investments/Fidelity Brokerage Services Inc.
- First Institutional Marketing
- FMC Technologies
- Fouts & Moore, L.L.P.
- Generon Systems Inc.
- Goldstein & Associates Inc.
- GOTCO, N.V..
- Griggs & Harrison P.C.
- Gulf Chemical and Metallurgical Company
- Gulf Coast Benefits Design
- Gulf Coast Window Covering
- Hoffman-LaRoche Inc.
- I.Q. 2000 Inc.
- Ingenium Inc.
- Insync Internet Services Inc
- Integrated Trade Systems Inc.
- Intermedia Communications
- International Union of Operating Engineers
- Jackson Walker L.L.P.
- Jenkens & Gilchrist P.C.
- Jenly, Inc.
- John H. Harland Company
- Jordan River Financial Services
- Kacee Club, Inc. (Dallas)
- Kelly Engineering Resources
- Knights fo Columbus (and their family members in Texas)
- KW Industries Inc.
- Landry's Inc.
- Law Offices of Manuel E. Solis
- Marathon Oil
- McGovern Allergy Clinic
- Mechanical and Refractory Inspection Services
- Member Auto Service
- Meyers-Pollock-Robbins Inc.
- Mineral Research & Development Corporation
- Morris Architects Inc.
- M-R Electronics Inc.
- Mundy Contract Maintenance Inc.
- Nalco Chemical Company
- Network Cabling Services Inc.
- Nuevo Energy Company R.B.F. Autokam
- Paymetric Inc.
- Pluspetrol International Inc.
- R.B.F. Autokam
- R.J. Gallagher Company
- Restoration Services Inc.
- Rhone Poulence Inc.
- Robertson and Anschultz P.C.
- Roman Catholic Diocese of Dallas
- Roman Catholic Diocese of Fort Worth
- RsandA LLC
- San Luis Pass Fishing Pier
- Schenectady Chemical Company
- SER-Jobs for Progress of the Texas Gulf Coast Inc.
- Shadwick International
- Shintech Inc.
- Simonton Kutac & Bamidge
- Smith Seckman Reid Inc.
- Sonoco Fibre Drum Inc.
- Steinberg Design Collaborative LLP
- Stork Southwestern Laboratories
- Summit Administrators Inc.
- Sumner Manufacturing Co Inc.
- Synhrgy HR Technologies Inc.
- Taibridge Limited
- Tarbet Association of Sales Consultants
- Tauber Oil Company
- Tejas Energy LLC
- Texas Catholic Schools
- Texas Department of Transportation District 13
- Texas Marathon Oil Company
- Texas Permanent Peakload Inc.
- Texas Regular Swift Energy Company
- The Office of Pierce Goodwin Alexander & Linville
- The Procurement Centre
- The Ryland Group Inc.
- Torch Energy Advisers Inc.
- Total American Services Inc.
- Total Minatome Corporation
- Towers Perrin
- Trade Cast L.T.D.
- Transworld Energy Production Inc.
- Transworld Oil America Inc.
- Transworld Oil U.S.A Inc.
- U.S. Contractors Ltd.
- U.S. Datalink Inc.
- U.S. Legal Support Inc
- University of Houston (and alumni)
- Video Insight
- Western National Life Insurance Company
- Wilmar Industries Inc.