JC
John J. Clennan
John J. Clennan is a lawyer in Missouri City, TX who works for Clennan Law Firm, PLLC. Practice areas include Oil, Gas and Energy Resources, Real Estate, Wills-Trusts-Probate. Board certifications include Oil, Gas and Mineral Law. Licensed in Texas since 1980. Graduated from South Texas College of Law in 1979.
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Law school
Bar admission
Office
Disciplinary
JC
John J. Clennan
Clennan Law Firm, PLLCMissouri City, TX·46 years licensed
Claim profileContact attorney
John J. Clennan is a lawyer in Missouri City, TX who works for Clennan Law Firm, PLLC. Practice areas include Oil, Gas and Energy Resources, Real Estate, Wills-Trusts-Probate. Board certifications include Oil, Gas and Mineral Law. Licensed in Texas since 1980. Graduated from South Texas College of Law in 1979.
Law school
South Texas College of Law
Class of 1979
Bar admission
1980
State Bar of TX · #4376300
Office
4502 Riverstone Blvd Ste 103
Missouri City, TX 77459
Disciplinary
None on record
Clean since admission
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Case data
Case data
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Practice, courts & credentials
Practice areas3 listed
Oil, Gas and Energy ResourcesReal EstateWills-Trusts-Probate
Courts admitted1 total
State Bar of North Dakota
Credentials1 certified
Oil, Gas and Mineral Law
Board certified 1997
No public disciplinary history
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Last refreshed Jun 2026