Texas Post World War II
- Abarca, Apolonia Muñoz [Polly]
- Abbott, Vincent Paul [Vinnie Paul]
- Abercrombie, James Smither
- Able, Mary Nees
- Abram, Jacques
- Acosta, Maria Angela Socorro Grijalva [Lucy]
- Acres Homes Transit Company
- Adair, Christia V. Daniels
- Adair, Paul Neal [Red]
- Addicks Reservoir
- Aeronautics and Aerospace Industry
- African Americans
- African Americans and Politics
- Agriculture
- Aguero, Bidal
- Aikin, A. M., Jr.
- Akins, William Charles
- Alaniz, John C.
- Alger, Bruce Reynolds
- Allen, Joseph Hugh
- Alley Theatre
- Alley, Shelly Lee
- Allred, Josephine Elizabeth Miller [Joe Betsy]
- Allright Corporation
- Almeda, TX
- Alonzo, Francisco [Frank]
- Alonzo, Ventura Martinez
- AMBER Alert
- America's Favorite Chicken [Church's Fried Chicken]
- American G.I. Forum of Texas
- American General Corporation
- Amigos En Azul
- AMR Corporation
- Anaya, Carmen Rodríguez
- Anderson Fair Retail Restaurant
- Anderson, Clayton and Company
- Anderson, Dillon
- Anderson, John Quincy
- Anderson, Ralph Alexander, Jr.
- Anderson, Ralph Alexander, Sr.
- Anderson, Richard Allen
- Andrade, Erasmo Wilivaldo
- Andrews, Jesse
- Andujar, Elizabeth Richards [Betty]
- Anita Bryant Protest (Houston)
- Anson Jones Press
- Anzaldúa, Gloria Evangelina
- Archie, Ernest Alvin, Jr. [Tom Archia]
- Arlington Stadium
- Armadillo World Headquarters