The "Amazing" Alpha Omicron Sigma chapter was chartered December 29, 1944 by seven distinguished women: Soror Mary Carter-Southwest Regional Syntaktes, Soror Maudies Baker, Soror Juanita Hall, Soror Lurlean Hillard, Soror Myrtle Joiner, Soror Lillie Jones, and Soror Illistene Webster.
The graduate chapter advises two undergraduate chapters in the North Texas area. They are Gamma Iota at Paul Quinn College and the Eta Alpha at the University of North Texas, advised by Shakila Farmer.
The chapter has an extremely active Rhoer and Philo club.
Alpha Omicron Sigma received the SW Regional Award in 1970 for the most Outstanding Program instituted of the year.
Distinguished Sorors of the chapter include:
Quindonell Robertson, SW Regional Campus Chapter Coordinator (1963 -1967) , SW Regional Syntaktes (1967-1971), member of the National Board of Directors (1967-1971) and National Boule Hostess 1971;
Jennifer Jones, SW Regional Tamiochus (2000-2002), International Sgt-At-Arms (2000-2002)
Karla Smith, Esq, International Legal Advisor
Dr. Jacquecola Lott, SW Regional Epistoleus (2000-2001),
Henry Etta Johnson-O'Neal, SW Regional Undergraduate Chapter Coordinator and International Board Member (elected 2002)
Southwest Region Undergraduate Chapter Coordinator (2008-2010)
Miesha Clinkscales, Southwest Regional Elections Chair (2008-2010)
Soror Henry Etta O'Neal, Dallas NPHC Outstanding Contribution Award
Eta Alpha (University of North Texas), Southwest Undergraduate Chapter of the Year 2006-2008.
Past Chapter Basileus include Soror Lillie Jones, Maudie Baker, Erma George, Lorrayne Jordan, Maurine Stevenson, Ruby Thompson, Vassie Bell, Quindonell Robertson, Johnnie Willis, Carolyn Lewis, Jennifer Jones, Dr. Jacqueola Lott, Henry Etta O'Neal, & Paula Alexander.
| Basileus | Soror Quiana P. Sawyer |
| 1st Anti-Basileus | Soror Miesha Byrd-Clinkscales |
| 2nd Anti-Basileus | Soror Joanne Thompson |
| 3rd Anti-Basileus | Soror Brandy Dawson |
| Grammateus | Soror Shelley Hostetter |
| Anti-Grammateus | Soror Erica Owens |
| Tamiochus | Soror Crystal DeLeon |
| Epistoleus | Soror Kimberly Sawyer |
| Parliamentarian | Soror Lori Mosby |
| Chaplain | Soror Cheryl Edinbyrd |
| Sgt. At Arms | Soror Angela Thompson |
| Rhoer Advisor | Soror Robin Birt |
| Philo Advisor | Soror Anita Montgomery |
| By-Laws Committee | Soror Lori Mosby |
| Hospitality Committee | Soror Jasmine Stewart |
| Community Service Committee | Soror Cheryl Edinbyrd |
| Budget Committee | Soror Crystal DeLeon |
| Membership Committee | Soror Miesha Byrd-Clinkscales |
| Scholarship Committee | Soror Shakila Farmer |
| Social Committee | Soror Marlanne Venters |
| Fundraisers Committee | Soror Joanne Thompson |
| Awards & Achievement Committee | Soror Karla Fuller |