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Ahmad, Zavitsanos & Mensing

Houston, Texas
THE BEST LAWYERS IN AMERICA® AWARDS:: 13 BEST LAWYERS: ONES TO WATCH® IN AMERICA AWARDS:: 13 BEST LAW FIRMS® AWARDS:: 11
26 Attorneys

About Ahmad, Zavitsanos & Mensing

Office Locations

Houston, TX Headquarters

1221 McKinney Street, Suite 2500, Houston, TX 77010

713-655-1101

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Leadership Team

Sandy Howell

Office Administrator

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John Zavitsanos

Managing Partner

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Awards & Recognition

Featured Awards

THE BEST LAWYERS IN AMERICA® AWARDS: 13

BEST LAWYERS: ONES TO WATCH® IN AMERICA AWARDS: 13

BEST LAW FIRMS® AWARDS: 11

All Awards

  • AZA named among nation's "Most Feared" law firms
  • Benchmark Litigation - Firm and three lawyers rated
  • AZA listed by Law360 among 10 boutiques “Giving BigLaw a Run for its Money”
  • BTI Client Service A-Team 2012 to firm AZA
  • 3 of Texas Top 2011 Verdicts on Both Sides of the Bar - Texas Lawyer
  • Who's Who in Energy named 3 AZA Lawyers - Listed by 7 city business journals
  • Texas Super Lawyers - up to 7 to 13 lawyer on Rising Stars list for Texas
  • Texas Super Lawyers - 3 AZA Lawyers Top 100 Texas, 4 AZA Lawyers Top 100 Houston
  • U.S. News/Best Law Firms- AZA Tier 1 in Commercial Litigation
  • U.S. News/Best Lawyers in America - 9 AZA Best Lawyers
  • BTI Client Service All-Star Team 2013 - John Zavitsanos
  • BTI Consulting Group names AZA "Awesome Opponents"
  • Texas Intellectual Property Law Firm of the Year by firm clients and the publishers of Global Law Experts
  • Texas Super Lawyers - 9 AZA Lawyers named Texas Super Lawyers
  • AZA Earns Selection to Texas Verdicts Hall of Fame - Texas Lawyer
  • Three AZA Attorneys Named to Who's Who in Energy List - Houston Business Journal
  • Chambers USA: America's Leading Lawyers for Business - AZA among Best in Commercial Litigation
  • Chambers USA: America's Leading Lawyers for Business - 3 AZA lawyers rated
  • Houston Law Firm AZA Named Among Largest Energy Practices by Houston Business Journal

Key Contacts

John Zavitsanos

Managing partner

713-655-1101

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Mary Flood

Consultant

7138576560

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Notable Clients

Air Liquide America American Automobile Association CITGO Petroleum Corporation Enbridge Inc. Genuine Parts Company Mercedes-Benz USA National Oilwell Varco Plains All American Pipeline, L.P. PSC , LLC Versata Software

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Reviews

4.5 / 5

51 Reviews

B

Boyd Fay-O'Reilly

Jan 31, 2026

Many thanks to Ahmad, Zavitsanos & Mensing for the hard work and dedication to my legal matter

Best lawyer for Commercial Litigation law in undefined. Period. I've seen others, but Ahmad, Zavitsanos & Mensing is on another level. They truly care about their clients and work hard to get the best...

A

Alexander Herzog-Ondricka

Jan 31, 2026

Five stars for the incredible team at Ahmad, Zavitsanos & Mensing in undefined - they are amazing

Ahmad, Zavitsanos & Mensing is fantastic and very professional. Don't hesitate to hire them if you're in undefined and need help. They really know their stuff and will go the extra mile to make sure y...

D

Donnie Champlin

Jan 31, 2026

Solid work and professional service from Ahmad, Zavitsanos & Mensing in undefined for undefined residents

I appreciate how Ahmad, Zavitsanos & Mensing handled my case. No fluff, just straight to the point and very effective representation for my Commercial Litigation law matter. They are obviously very ex...

V

Vicki O'Connell

Jan 31, 2026

Many thanks to Ahmad, Zavitsanos & Mensing for the hard work and dedication to my legal matter

Best lawyer for Commercial Litigation law in undefined. Period. I've seen others, but Ahmad, Zavitsanos & Mensing is on another level. They truly care about their clients and work hard to get the best...

L

Lydia Stokes

Jan 31, 2026

Many thanks to Ahmad, Zavitsanos & Mensing for the hard work and dedication to my legal matter

Super helpful and professional staff at Ahmad, Zavitsanos & Mensing's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support...