
About Vanessa O'Brien
Vanessa Cantu O'Brien is an attorney at Crosley Law in San Antonio, Texas, serving injured Texans with quality legal representation. After earning her J.D. from St. Mary's University in 2017, she worked at a San Antonio civil litigation firm handling complex civil litigation matters and mass tort cases, then spent five years as an insurance defense attorney handling a variety of personal injury matters before joining Crosley Law in May 2025. During law school she served as a judicial intern for U.S. District Judge Marina Garcia Marmolejo in the Southern District of Texas, as a legal intern for the U.S. Attorney's Office for the Western District of Texas, as a staff writer for the St. Mary's Law Journal, and as a member of the St. Mary's External Advocacy Program Moot Court team.




