JH
J. Brett Harrison
J. Brett Harrison is a lawyer in Tyler, TX who works for Files Harrison & Millslagle P.C.. Practice areas include Criminal. Board certifications include Criminal Law. Licensed in Texas since 1995. Graduated from St. Mary's University in 1995.
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Law school
Bar admission
Office
Disciplinary
JH
J. Brett Harrison
Files Harrison & Millslagle P.C.Tyler, TX·30 years licensed
Claim profileContact attorney
J. Brett Harrison is a lawyer in Tyler, TX who works for Files Harrison & Millslagle P.C.. Practice areas include Criminal. Board certifications include Criminal Law. Licensed in Texas since 1995. Graduated from St. Mary's University in 1995.
Law school
St. Mary's University
Class of 1995
Bar admission
1995
State Bar of TX · No. 793909
Office
100 E Ferguson St Ste 404
Tyler, TX 75702
Disciplinary
None on record
Clean since admission
Career history
2 observed firms
Based on State Bar of Texas snapshots — each row is a firm the attorney was registered with at one of our quarterly pulls.
- Files Harrison P.C.AS OF MAY 2023Private Law Practice · Tyler, TX
- Files Harrison & Millslagle P.C.APR 2026 — PRESENTPrivate Law Practice · Tyler, TX
Case data
Case data
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Practice & jurisdiction
Practice areas
- Criminal
Credentials
Board certification
Criminal Law
TBLS · Certified 2005
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Last refreshed Jun 2026