AttorneyDuyen Thien Nguyen● 68 total views
DN

Duyen Thien Nguyen

Tallgrass·Houston, TX·21 years licensed

Duyen Thien Nguyen is a lawyer in Houston, TX who works for Tallgrass. Practice areas include Government/Administrative, Oil, Gas and Energy Resources, Real Estate. Board certifications include Oil, Gas and Mineral Law. Licensed in Texas since 2004. Graduated from Loyola University New Orleans in 2004.

Claim profileContact attorney
Law school
Class of 2004
Bar admission
2004
State Bar of TX · No. 24046529
Office
9 Greenway Plaza, Suite 1100
Houston, TX 77046
Disciplinary
None on record
Clean since admission
DN

Duyen Thien Nguyen

Tallgrass
Houston, TX·21 years licensed
Claim profileContact attorney

Duyen Thien Nguyen is a lawyer in Houston, TX who works for Tallgrass. Practice areas include Government/Administrative, Oil, Gas and Energy Resources, Real Estate. Board certifications include Oil, Gas and Mineral Law. Licensed in Texas since 2004. Graduated from Loyola University New Orleans in 2004.

Law school
Bar admission
2004
State Bar of TX · No. 24046529
Office
9 Greenway Plaza, Suite 1100
Houston, TX 77046
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.

  1. City of Houston Legal DepartmentAS OF MAY 2023
    Government Lawyer · Houston, TX
  2. TallgrassAPR 2026 — PRESENT
    Government Lawyer · Houston, TX
Case data

Case data

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Practice & jurisdiction
Practice areas
  • Government/Administrative
  • Oil, Gas and Energy Resources
  • Real Estate
Courts admitted
  • Texas Southern District/Bankruptcy Court
Credentials
Board certification
Oil, Gas and Mineral Law
TBLS · Certified 2011
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Last refreshed Jun 2026