WO
William Sean O'Neil
William Sean O'Neil is a lawyer in Houston, TX who works for W. Sean O'Neil, Attorney at Law. Practice areas include Insurance, International, Litigation: Commercial. Court admissions include Fifth Circuit Court of Appeals, Louisiana Eastern District Court. Licensed in Texas since 2002. Graduated from Tulane University in 1996.
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WO
William Sean O'Neil
W. Sean O'Neil, Attorney at LawHouston, TX·24 years licensed
Claim profileContact attorney
William Sean O'Neil is a lawyer in Houston, TX who works for W. Sean O'Neil, Attorney at Law. Practice areas include Insurance, International, Litigation: Commercial. Court admissions include Fifth Circuit Court of Appeals, Louisiana Eastern District Court. Licensed in Texas since 2002. Graduated from Tulane University in 1996.
Law school
Tulane University
Class of 1996
Bar admission
2002
State Bar of TX · #24033807
Office
2000 S Dairy Ashford Rd Ste 348
Houston, TX 77077
Disciplinary
None on record
Clean since admission
Case data
Case data
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Practice, courts & credentials
Practice areas4 listed
InsuranceInternationalLitigation: CommercialLitigation: Personal Injury
Courts admitted6 total
Fifth Circuit Court of Appeals
Louisiana Eastern District Court
Louisiana Middle District Court
Louisiana Western District Court
Texas Eastern District Court
Texas Southern District/Bankruptcy Court
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Last refreshed Aug 2026