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John B. Brennan

Criminal defense Attorney at Marlton, NJ

5.0   52 reviews
Free consultation Virtual consultation available
Free consultation Virtual consultation available
  • State Years
    New Jersey - NJ 34 years
    Pennsylvania - PA 34 years
  • Licensed for 34 years
    State NJ
    Acquired 1989
    Status
    Active No misconduct found
  • Licensed for 34 years
    State PA
    Acquired 1989
    Status
    Retired No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About John

Learn John’s areas of practice.

3
Practice areas
  1. Criminal defense
    40%
    Criminal matters in the Superior Court of New Jersey, United States District Court for the District of New Jersey, New Jersey Municipal Courts

    35 years

  2. Sex crime
    30%
    All matters concerning sexual offenses. Sexual assault, Endangering the welfare of a child, child pornography, Megan's Law.

    35 years

  3. Violent crime
    30%
    Gun Crimes Murder, Robbery, Aggravated assault. Weapons offenses, 2nd Amendment Gun issues

    35 years

I HAVE THE EXPERIENCE, THE CREDENTIALS AND THE COMPASSION TO HELP YOU WITH YOUR LEGAL PROBLEM.

I am a former prosecutor with over 32 years of Criminal Trial experience. Certified by the New Jersey Supreme Court as a Criminal Trial Attorney. 

Awards

Client's Choice 2022,2021,2020,2017,2016,2015
Client's Choice
2022 2021 2020 + 3 ...
Top Contributor 2017,2016,2015
Top Contributor
2017 2016 2015

Location

The Law Office of John B. Brennan
10000 Lincoln Dr, East
Suite 201
Marlton, NJ, 08053

Reviews

5.0 / 5.0
  52 customer reviews
5 Star
 
100%
4 Star
 
0%
3 Star
 
0%
2 Star
 
0%
1 Star
 
0%
Client's Choice 2022
Client's Choice
Client's Choice is an Avvo award granted to attorneys with a significant number of client reviews over 4 stars in a given year.
Posted by anonymous | March 19, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Results better than I hoped for.
I got a traffic ticket. When I spoke to Mr. Brennan he listened to what I had to say and calmed my fears. We went to court and he took care of everything. I couldn't be happier with the results.
Posted by Yaron Daniel | December 14, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Amazing lawyer!
I got a letter in the mail that I was indited from a case a long time ago that I had no idea about! I was so scared that I was going to jail because of this! I did my research and came across Mr. Brennan. From the first phone call they were helpful and ready to meet with me to talk about what’s going on. He eased my stress very quickly and I knew I was in good hands! He helped me with this case so much and I am so happy I found him! If you have any criminal cases defiantly contact me. Brennan he is awesome!
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Posted by anonymous | October 28, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Work
Mr. Brennan is a professional, kind, and empathetic attorney who will work for your best interests. Regardless of what you are facing, I highly recommend Mr. Brennan to represent you in your case.
Posted by Osmani | August 12, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Excellence!!
Great attorney!! Very human very professional and good at what he does…..so glad I hired him! I would again without hesitation…4 thumbs up!
Posted by anonymous | August 8, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Amazing Experience
John Brennan was amazing. Asked multiple questions to ensure he knew the entire situation. Talked me through possible outcomes and what was likely to happen and answered any questions I had without hesitation. He is amazing at what he does.
Posted by michael oneill | April 6, 2022
This review is from a person who hired this attorney.
| Hired Attorney
The best
Got my case dismissed and expunged . Great job , highly recommended . I would call John if you need legal help.
Posted by anonymous | February 22, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Personalized and prompt
I looked him up on the Internet and found many. I read his bio and just called and tried my luck. He picked up right away and was very reassuring. He told me what to expect and was in constant contact with me up to the court hearing fir my traffic violation. He successfully defended me and won the case for me. I am impressed by the personal experience and he is not the typical lawyer who you would think is just our for your money. I would recommend him highly to anyone.
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Posted by MONICA | February 17, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Thank you!
Thank you for all your help . So greatly appreciate you amazing work words of encouragement really helped me see the light at the end of the tunnel.
Posted by anonymous | February 1, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Juvenile charges
Mr Brennan was highly professional and assisted us in every step of the way. I’d highly recommend Mr Brennan for any legal services you are in need of.
Posted by anonymous | January 27, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Extremely knowledgeable and professional
Hired him to handle a case dealing with a very serious charges. He knew the outcome and everything he predicted happened. He calmed my nerves. Thanks
Posted by James | August 26, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Excellent
One of the best lawyers in the State of NJ Mr John Brennan was able to get both of my cases dismissed he’s wonderful to work with he’ll answer all of your questions and assist you with everything that has to do with your case.
Posted by DJ | July 9, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Professional
Mr. Brennan handled my difficult situation with extreme professionalism. It was a long hard battle that I could not have won by myself. I would recommend John Brennan to anyone needing an attorney. He’s one of the good guys!
Posted by Merla | June 28, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Mr. John Brennan
Mr. Brennan was the best lawyer I could have hired. He took my case and listen to me when I explained what had happen . He advised me to not to talk to anyone concerning my case and to attend all the court dates. He worked on getting me in the PTI program and got the restitution reduced to an amount I could pay. Mr. Brennan stayed in touch with me through out the entire time with phones and emails he was always professional and friendly he kept my spirits up and gave me good sound advice. I would recommend Mr. Brennan to anyone who needs a lawyer. Thank you
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Posted by anonymous | June 11, 2021
This review is from a person who hired this attorney.
| Hired Attorney
The Best
He’s representation was unmatched in my specific situation. I was facing serious incarceration and he had it reduced to 1yr non custodial probation. He’s the best.
Posted by Andrew | May 24, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Amazing Service
John took time before I even hired him to help me walk thru my issues and for this reason is why I haired him!!
Posted by anonymous | December 4, 2020
This review is from a person who hired this attorney.
| Hired Attorney
A superb attorney !
Attorney John Brennan is honestly the BEST at what he does, plus he demonstrated to me that he is also a superb person. Mr. Brennan was essential in saving me from a very scary ordeal which I did not create. I was framed for assault by a person I thought was a friend. Unfortunately for me this person was bi polar and had a violent past and I was frightened and anxious. Thankfully I found Mr. Brennan's name on an internet search. He was diligent in taking my case immediately with careful attention. Mr. Brennan exemplified professionalism and he also showed true concern for me. He is very skilled and experienced, in all regards he knew just what to do to in order to best proceed with my case. All charges were dropped and I was cleared of all wrongdoing. Additionally and importantly, I feel safe again! Of course- I hope that I NEVER again need a criminal defense attorney, but I should add that I was able to afford him also, which is a big factor. This speaks volumes about his character, when many lawyers charge higher fees for less finesse. You can trust he will get the job done in your case to the best of his ability, and I highly recommend him!
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Posted by L.L. | August 15, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Hiring Mr. Brennan made a statement without having to say anything!
Mr. Brennan is a reliable and trustworthy attorney. I am very pleased with the outcome of my criminal case. Mr. Brennan kept me informed and helped ease my nerves throughout the entire process. Any questions or concerns I had were taken seriously and responded to quickly. Being a former (respectable) Prosecutor, I think John has a better understanding of what is expected and can see a case from all points of view. This experience also affords Mr. Brennan the confidence needed as a defense attorney. It didn’t hurt when I stated my attorneys name everyone seemed to know of him. To me, speaking his name made one clear statement; I was taking the matter very seriously and prepared for anything that may come. This confidence is exactly what I needed and really helped me get through a rough time. I’m glad I chose John Brennan as my criminal defense attorney.
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Posted by anonymous | July 21, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Very Professional
John was extremely professional, intelligent and helped eased any nerves I had moving forward in my case. He kept me up to date on what was happening and helped explain things if I seemed confused. He was a fantastic lawyer
Posted by anonymous | July 17, 2020
This review is from a person who hired this attorney.
| Hired Attorney
No better attorney anywhere!
He saved me from going to jail. He took care of me like I was family! One word to describe him - Selfless! ep
Posted by Chris | June 30, 2020
This review is from a person who hired this attorney.
| Hired Attorney
A Solid Professional
He was extremely knowledgable about the court system. Which makes sense, considering he is a former prosecutor. He made me feel at-ease, and helped me navigate the system. I would highly recommend him.
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Cost

Rates
  • Free Consultation 60 minutes
Payment methods
Cash, Check, Credit Card

Resume

AVVO RATING 9.8 (Superb)

Work Experience

  • Owner
  • Law Office of John B. Brennan
  • 2014 - Present
  • Assistant Prosecutor
  • Burlington County Prosecutor's Office
  • 1989 - 2014

Education

  • Widener University School of Law
  • JD - Juris Doctor
  • 1989
  • College of New Jersey
  • BA - Bachelor of Arts
  • 1989

Associations

  • Burlington County Bar Association
  • Member
  • 2015 - Present
  • New Jersey Association of Criminal Defense Lawyers
  • N/A

Languages Spoken

  • English

Honors and Awards

  • Peer Review Rated
  • Martindale-Hubbell
  • 2018
  • Certified Criminal Trial Attorney
  • New Jersey Supreme Court
  • 2014

Attorney endorsements

Received (9)
Given (5)
Endorse John
Criminal defense Attorney | Dec 20
Relationship: Worked together on matter
"I had the privilege of working with and learning from John Brennan at the Burlington County Prosecutor's Office. I have also handled various criminal defense matters with Mr. Brennan since he went into private practice. Simply stated, Mr. Brennan is a phenomenal criminal trial attorney. He is knowledgeable, talented and typically has more trial experience than the prosecutor's he goes up against. For those reasons, I hold Mr. Brennan in the highest regard and am happy to endorse him in the area of criminal defense."
Criminal defense Attorney | Dec 18
Relationship: Fellow lawyer in community
"John is an excellent attorney who not only cares about his clients but has the tools knowledge and experience to help them. I have referred many cases to John over the years, because I know that he will give them his very best."
Criminal defense Attorney | Dec 16
Relationship: Fellow lawyer in community
"I endorse this lawyer."
Criminal defense Attorney | Dec 16
Relationship: Opposing Counsel on matter
"I endorse this lawyer. John is one of the best. He is well respected. I highly recommend him."
Criminal defense Attorney | Dec 16
Relationship: Opposing Counsel on matter
"John and I were adversaries on many cases when he was at the prosecutor's office. He was a consummate professional who always treated me and my clients with respect."
Criminal defense Attorney | Dec 16
Relationship: Fellow lawyer in community
"I endorse this lawyer."
Criminal defense Attorney | Aug 26
Relationship: Worked for lawyer
"I had the pleasure of working for, and learning from, Mr. Brennan in the Burlington County Prosecutor's Office. He is one of the finest trial attorneys I have ever seen in my career and is thoroughly knowledgeable of all aspects of criminal law. He fights for his clients and obtains the best possible result. I endorse him without reservation."
Criminal defense Attorney | Jun 27
Relationship: Opposing Counsel on matter
"I endorse this lawyer."
Criminal defense Attorney | Apr 30
Relationship: Fellow lawyer in community
"Mr. Brennan has a wealth of experience(over 25 years) in the area of criminal law. This has garnered him wide recognition in the court system-particularly here in Burlington County."
View more endorsements
Criminal defense
Criminal defense
Criminal defense
Criminal defense
Marlton Criminal defense Lawyer John B. Brennan
John B. Brennan
Criminal defense Attorney
Marlton, NJ
Licensed for 34 years
Free Consultation
Virtual consultation available