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also known as Nii
I entered the legal profession because I have a strong passion to serve others. This passion and "do whatever it takes" attitude has afforded me experience in number of legal practice areas, including: criminal defenese, commercial litigation, divorce and custody diputes, and bankruptcy. Prior to opening up my law firm I had the privilege to serve as the President of the University of Idaho College of Law Student Bar Association, and as Lieutenant Governor of Membership and Communication for the American Bar Association Law School Division’s 12th Circuit. These positions sharpened my skills for advocacy, negotiations, and clearly communicating the needs of those who entrust him with their issues.
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Practice Areas
11 years
11 years
Free Consultation
$0 first 30 minutes
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Chat withState: Texas
Acquired: 2015
No misconduct found
1216 N Central Expy, Ste 208, Mckinney, TX, 75070
Showing 1 - 5 of 18 client reviews from Avvo
Posted by anonymous | April 16, 2025 | Hired Attorney
I hired Nii in 2019. He acted like a used car dealer. He might take your case, but soon—you’ll realize that he will not fulfill any of his obligations. He’s full of word salad. There are better attorneys out there. He’s rebranded himself several times.
Posted by anonymous | November 14, 2023 | Hired Attorney
Nii Amaa where are you we haven’t heard from you. Always calling me from different numbers. I try calling the numbers that you call me from and blank can’t get through. We had a zoom meeting he didn’t send the link. I text him on the link he sent to me no response. I don’t have money to just give y...
Posted by Alexis | April 20, 2021 | Hired Attorney
Nii amma is the best lawyer you will come across. He is knowledgeable and super helpful. He has always been there when I need him and very professional. HIGHLY RECOMMEND him to anyone looking for a A M A Z I N G lawyer.
Posted by Jason | August 14, 2020 | Hired Attorney
Nii has fulfilled his promises on 2 cases for me. One of them being divorce and the 2nd was a false claim that he had dismissed for me. Nii is a truly amazing person and attorney! You're in great hands when Nii is on the case! Thanks Nii!
Posted by anonymous | August 12, 2020 | Hired Attorney
Custody case was very complex and needed a lot of knowledge and leg work. He did not do his job and I ended up forking out thousands of more dollars trying to fix his mistakes. He blew through my money, and did not do his job. I did basically everything and he even stated in court that he needed ...
"Nii is a passionate and amazing criminal defense attorney who works hard for his clients. He is kind and he treats all his clients like family. That doesn't stop him from advocating aggressively for the best possible outcome for his clients."
"Nii is passionate about the law and practices with his client's best interests at heart. I endorse this lawyer."
"I have never known a lawyer so passionate about obtaining the best result for his client. He acccepts cases because he wants to help and works tirelessly to that end."
"Nii is a truly gifted, hardworking, intelligent, and experienced criminal defense attorney. It's obvious he is driven by a strong professional desire to obtain the very best outcome for his clients in every case. He has an affable nature, which quickly endears him to clients and other attorneys alike. I highly recommend Nii for any criminal matter in the North Texas area."
"I endorse this lawyer as he was always prepared. He always advocated for his client until the very end. The thing that really makes a family law case move along at a pace that is good for the client is a lawyer like Mr. Ollennu who always timely returns calls and responds specifically to questions and proposals from opposing parties."
"I fully endorse endorse Nii as an attorney. We tried a case together this year - and his help and insight proved invaluable to the case. Since then, I have had the privilege to get to know him even better. He exhibits deep compassion for his clients and their situation that can be very rare in the practice of law - especially in criminal defense. I can recall not too long ago - I read a Facebook post by him after a long, hard day of work at the courthouse where he expressed how "he only wished he could do more." To me - that summarizes his passion for practicing law, and the genuine concern and care he has for those he represents. He is a fine attorney, he is bright, intelligent, and as a fantastic future ahead as a lawyer. I am proud to call him a colleague, and a friend."
"I endorse this lawyer. Mr. Ollennu is a super sharp and very professional attorney. His passion for his clients really shows in the way he handles his cases. He went the extra mile to get his client's divorce completed in a reasonable time frame. His professionalism and responsiveness made working with him pleasurable and saved both our clients money because we had no need for unnecessary hearings or protracted litigation."
"I have known Nii Amaa for many years, and have always had a positive experience working with him. He has always maintained a very professional demeanor, and I can always be assured he will provide informed, and effective, counsel. I highly recommend him and his firm."
"Mr. Ollennu truly cares about his clients. I would highly recommend him for anyone seeking quality legal services."
"He is an excellent attorney . He has the knowledge and bravado to handle any Courtroom situation. Not only do I endorse this attorney, but II would definitely want him in my corner."
"I endorse this lawyer. Nii Amaa has a great temperament for handling family law cases. He truly cares about his clients and puts their needs first."
"Nii-Amaa is a fantastic attorney and an even better person. He is diligent, hard working, and responsive. I highly recommend him."
Criminal defense lawyer
Divorce and separation lawyer
Criminal defense lawyer
DUI and DWI lawyer
Criminal defense lawyer
Family lawyer
DUI and DWI lawyer
Family lawyer
DUI and DWI lawyer
Criminal defense lawyer
DUI and DWI lawyer
Personal injury lawyer
Business lawyer
Criminal defense lawyer
2024
2024 Rising Stars, Texas Super Lawyers Magazine
2023
2023 Rising Stars, Texas Super Lawyers Magazine
2022
2022 Rising Stars, Texas Super Lawyers Magazine
2021
2021 Rising Stars, Texas Super Lawyers Magazine
2020
Top 40 Under 40, National Trial Lawyers Association
2020
Top 100 Trial Lawyers, National Trial Lawyers Association
2019
Collin County Attorney of the Year - Runner Up, Legal Aid of Northwest Texas
2018
Best DUI Lawyers in Plano, Expertise
2018
Top 40 Under 40, American Academy of Attorneys
2017
Texas Criminal Trial College Participant, Texas Criminal Defense Lawyers Association
2017
"10 Best Attorneys" for Texas, American Institute of Criminal Law Attorneys
2016
Best DUI Lawyers in Plano, Expertise
2016
Member, Texas Bar College
2016
DUI Detection & NHTSA SFST Practitioner Course, Anthony Palacios
2015
Best DUI Lawyers in Plano, Expertise
2015 - Present
Managing Partner, Nii Amaa Ollennu Law Firm, PLLC.
2016 - 2017
Managing Partner, Ollennu & Rudd Law, PLLC.
2014 - 2015
Limited Licensed Attorney/Intern, University of Idaho Legal Aid Clinic
2014 - 2014
Limited License Attorney, Canyon County Public Defender's Office
2013 - 2013
Legal Intern, Dallas Public Defender's Office
2020 - Present
Texas Opportunity & Justice IncubatorMember
2016 - Present
DUI Defense Lawyers AssociationMember
2016 - Present
National College of DUI DefenseMember
2016 - Present
Collin County Criminal Defense Lawyers AssociationMember
2015 - Present
State Bar of TexasMember
2015 - 2016
American Bar Association Law School Division12th Circuit Lt. Gov. of Communication and Membership
2015
JD - Juris Doctor
2012
MA - Masters
2011
BA - Bachelor of Arts
2021
Help! I've been Grieved! What Every Lawyer Needs to Know About the Texas Grievance System
2020
English
Legal Answers
Can I go to the gun range after completing deferred adjudication ?
06 Nov 2020
Will I be drug tested at the pre trial interview?
11 May 2016