OT
Oscar G. Trevino
Oscar G. Trevino is a lawyer in Austin, TX who works for O'Hanlon, Demerath & Castillo. Practice areas include Administrative and Public, Business, Civil Rights. Court admissions include Fifth Circuit Court of Appeals, Texas Eastern District Court. Licensed in Texas since 1991. Graduated from University of Texas in 1991.
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OT
Oscar G. Trevino
O'Hanlon, Demerath & CastilloAustin, TX·34 years licensed
Claim profileContact attorney
Oscar G. Trevino is a lawyer in Austin, TX who works for O'Hanlon, Demerath & Castillo. Practice areas include Administrative and Public, Business, Civil Rights. Court admissions include Fifth Circuit Court of Appeals, Texas Eastern District Court. Licensed in Texas since 1991. Graduated from University of Texas in 1991.
Law school
University of Texas
Class of 1991
Bar admission
1991
State Bar of TX · #20211275
Office
808 West Avenue
Austin, TX 78781
Disciplinary
None on record
Clean since admission
Case data
Case data
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Practice, courts & credentials
Practice areas17 listed
Administrative and PublicBusinessCivil RightsConstructionConsumerContractsCreditor-DebtorElder LawFamilyGovernment/AdministrativeLabor-EmploymentLitigation: CommercialLitigation: Personal InjuryMediationReal EstateSchool LawWills-Trusts-Probate
Courts admitted5 total
Fifth Circuit Court of Appeals
Texas Eastern District Court
Texas Northern District Court
Texas Southern District/Bankruptcy Court
Texas Western District Court
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Last refreshed Aug 2026