Kenneth L. Marten

Criminal Defense Attorney

Kenneth L. Marten is an experienced, hands on Criminal Defense Attorney who takes a personal interest and involvement with every one of his clients. He is available 24/7 and his powers of advocacy are available in all related matters, He makes it a priority to personally appear at each and every Court appearance as he is uniquely familiar with all the facts and circumstances of each case.

He practices in Nassau, Suffolk and Queens Counties and has successfully handled all types of Criminal Cases and investigations. He is well respected throughout the Criminal Justice System and forcefully defends and protects his client's rights while presenting his clients with well thought out and original options to help resolve their cases. All initial consultations are free and potential clients as well as their friends or family members are encouraged to contact Mr. Marten as early on in the process as possible in order to produce the best results.

A Highly Skilled Attorney from Nassau County.

Kenneth L. Marten specializes in all criminal and family court juveniles, domestic violence, drugs, DWI, larcenies and all other white collar crime covering Nassau County.  His professional services are also available in Queens and Suffolk County.

Practice Areas


Alleged Domestic Violence

Drug Offense

Traffic Violations



Vehicular Homicide


Alcohol Related Criminal Defenses

Family Court Juvenile Proceedings


Best Lawyers - The World's Premier Guide


Chair of the Judiciary Committee - 2016-2017

President of the Nassau County Bar Association 2002-2003

Currently sits on the Nassau County Bar Association Board of Directors

Former Chair of the Nassau County Bar Association Judiciary Committee.

Current Chairman of the Nassau County Bar Association Judiciary Committee


Avvo Rating 9.6

Ken Marten Is The Attorney You Want
Ken represented me in a Domestic Violence Related Case and he was and is the best attorney you could have by your side. Ken was professional, an advocate, fair, supportive and compassionate, rational and provided timely results. He was always available, responded timely, diligent, understanding to my family needs and available when I needed him. Not only did he obtain the results I was looking for, he was available to colleagues to discuss relevant cases and present when he was requested to be in Court. He is the man that makes it happen.
If you are in need of a criminal attorney, there is no one better then Ken. I wholeheartedly recommend him to you if you need it. In addition, he is fair with his fees and always keeps your best interest in mind which I can tell you from personal experience means everything when you are in the midst of a crisis! I am thankful for Ken and everything he did for me and my family and I recommend you hire him if you are looking for a criminal attorney! He is the one advocate and attorney you want on your side!

February 26, 2017

Great attorney
Ken spent time with me to understand the details of my situation, he represented me respectfully and spoke on my behalf. He was always prepared and on time, and advised me what to do to in advance of court dates. He negotiated well and I was pleased with the results.

February 14, 2017

I found myself in trouble with the law. I never did anything wrong in my life so i was very intimidated. My lawyer took the time to explain everything to me so that i understood, put up with my constant nervousness(calming down over and over) and never once lying to me. His word was gold!!! Never promised anything he couldnt deliver. He even worked with me with his fee, allowing me to pay on my schedule, not his!!I listened to his advice and in the end it worked out in my favor just as he said it would. After it was over he gladly returned my calls and answered all my questions without even charging me a fee. He handled cases for two other people i sent his way and they had nothing but high praise for him. In the courtroom he is a highly respected man by both judges and prosecutors but outside of the court room he a regular guy who takes the time to understand. I would have never gotten through my ordeal if not for him and i owe him more than money itself.
Joe DeLuca
November 17, 2010

I can't say enough positive things about Kenneth Marten
I can't say enough positive things about Kenneth Marten. He helped me with a very complicated and scary situation and handled my case professionally at every stage. Kenneth is more than a skilled litigator. His expertise and compassion made a difficult situation bearable. From our first meeting, Kenneth put my mind at ease and I knew I had put my case into the right hands. I was kept informed throughout the entire process and always clarified of any questions I had. I felt safe with my life in his hands. Kenneth genuinely cares about the impact the case has on the life of the client. He gives you his undivided attention and takes the time to go through every possible course of action to take to attain success. He is creative and able to think of reasonable solutions when problems and unique situations arise. Kenneth is extremely sharp and stays on top of his game. Most importantly, my case concluded successfully and I could go on with my life! In recognition of Kenneth's preparation, persistence and personality, my multiple criminal conviction case was dismissed!! I am eternally grateful for Kenneth Marten as he gave me a second chance at life- If you're in need of his services, I would unquestionably recommend Kenneth Marten as your attorney.
a client
February 5, 2016

Contact Us

Get in touch


The Office

  • Address: 1025 Old Country Rd Suite #404 Westbury, NY 11590
  • Phone: 516-747-5800
  • Email:

Business Hours

  • Monday – Friday 9am to 5pm
  • Saturday – 9am to 2pm
  • Sunday – Closed