The Garden City Center Building
100 Quentin Roosevelt Boulevard
Garden City, NY 11530


About Us

Meet Our Founding Attorney: Matthew S. Seidner, Esq.

Choosing a divorce and family law attorney in times of personal and family upheaval is a profound decision. You need someone who brings more than just legal jargon to the table – you need a proven track record of success, a deep understanding of family law on Long Island, and an unwavering commitment to fight for the best outcomes. This is where leading divorce lawyer Matthew S. Seidner comes in.

Professional Credentials

Mr. Seidner’s outstanding professional credentials are a testimony to his capabilities. He has been peer-rated at the highest possible level, “Preeminent”, by Martindale-Hubble, consistently rated as a “SuperLawyer”, and maintains a perfect 10/10 rating on Avvo.

Knowledge and Experience

Before launching his own firm over twenty years ago, Mr. Seidner honed his legal prowess in some of the country’s top-tier law firms, representing billion-dollar companies in high-stakes litigation. This high-pressure environment equipped him with the strategic acumen that he now brings to every family law case he handles. This is someone who has been through the legal battlefields before and knows how to handle situations when in the line of fire.

Trial Capabilities

Mr. Seidner’s courtroom victories bear witness to his relentless dedication to his clients. He has litigated some of the most complex and long-drawn trials and defended his successes before the New York Appellate Court on numerous occasions. His litigation skills have earned him a reputation as a formidable force in the courtroom. No wonder his clients describe him as an unwavering advocate who goes above and beyond to put their interest first.

Negotiation Skills

Mr. Seidner’s success is not limited to the courtroom. Recognizing that not all battles are best fought in court, he is just as committed to negotiating amicable settlements when it’s in his client’s best interest. His client-focused approach has enabled him to secure favorable out-of-court settlements, often saving clients the emotional and financial strain of prolonged litigation.

Personalized Approach

What truly makes Mr. Seidner stand out among divorce attorneys is his deep personal approach to each case. He doesn’t see clients as just case numbers but as people with unique stories. Whether navigating the emotional minefield of a contentious divorce, or strategically advocating for a fair alimony arrangement, he is known for rolling up his sleeves, working tirelessly round-the-clock, being available for his clients at all times, and guiding them through the most challenging times with empathy.

Why Choose The Law Offices of Seidner & Associates, PC

At Your Side, Every Step of the Way

The commitment of our divorce lawyers goes beyond the courtroom. We are with you at every twist and turn, providing guidance and support, so you never feel lost in Long Island’s legal system.

Dedication to Fight for Your Rights

When we take on your case, your fight becomes our fight. Our family law attorney will stay determined to protect your rights and leave no stone unturned in achieving the best possible outcome for you.

Solution Tailored to Your Needs

We know every contested or uncontested divorce case is unique. Our team of Long Island divorce lawyers crafts personalized legal strategies, designed to fit your specific needs and circumstances.

Results-Driven Approach

Whether it is a high-conflict divorce, high net worth asset division, child support, spousal support, or another family law matter, our focus is always on the finish line. We fight to achieve the most favorable results in each case.

Get one of the Most Trusted Divorce Law Firm in Long Island on Your Side

At The Law Offices of Seidner & Associates, PC, we have turned the tide in tough divorce cases, protected rights in contentious child custody battles, and secured fair settlements in intricate property distribution matters. Since 2003, we have been the difference between a setback and a victory for countless clients. So, if you’re looking for a divorce attorney who can help you change your life’s trajectory, you have come to the right place. That’s exactly what we do. Every person we have helped is a testament to our tenacity. Now, it’s your turn. Call us at (516) 345-9900 or reach out to us online. With us by your side, you are not just hoping for a better future, you’re on your way to making it happen.

There are many law firms that have experience in Matrimonial/Divorce and Family Law. The Law Offices of Seidner & Associates, PC. has a staff of attorneys and paralegals who focus only on these two areas of law and we have a combined roughly five decades worth of legal experience in our beautiful Garden City office. We are big enough to have the capacity to handle the most complex legal matters yet small enough to have intimate relationships with all of our clients. Our firm has successfully litigated or negotiated some of the largest cases on Long Island, both inside and outside of the Courts. While we always strive to settle amicably, if we decide a trial is appropriate, we relentlessly pursue a victorious result. We simply never stop until our client has achieved the maximum possible results. In fact, many of our clients come to our office after leaving other attorneys when a trial seem imminent and true trial lawyers are required.

Mr. Seidner has litigated numerous cases of legal significance to the profession that resulted in many published decisions. He has tried some of the longest durational trials and then defended successes before the Appellate Court many times. Mr. Seidner represents everyone from physicians and attorneys, athletes and celebrities, teachers and police officers, to homemakers and grandparents. This firm is also repeatedly hired by court staff and Mr. Seidner has been appointed countless times by various judges to serve as a Part 36 fiduciary to render reports to the Supreme Court. Mr. Seidner has authored many articles in both local publications such as The Nassau Lawyer _to national law journals such as for the _American Bar Association: Law Practice Magazine. Our cases and attorneys have been featured and quoted both in print, such as in The New York Times and _The New York Post _and on television such as on NBC News. Despite some of the more public cases the Law Offices of Seidner & Associates handles, most clients are people who just live in the area and need a law firm who not only wins, but cares. Fortunately, most cases settle, sooner or later.

The Law Offices of Seidner & Associates, PC would like the opportunity to meet with you in your time of need. Whether you want to start an action or have been served, we have been told that even our initial consultations are far superior to those of most other law firms. We pride ourselves on not only representing our clientele but educating them about the law and their options. Mr. Seidner always treats his clients as he would expect to be treated. While many of our clients find us in online searches, after decades of service, most clients are referred not only by prior ones, but by other professionals. We look forward to having the opportunity to discuss your case with you and provide honest, educated feedback. The Law Offices of Seidner & Associates, PC is relentless in its pursuit of obtaining the best possible results for you and your family.


Need legal representation? Fill out our contact form with some information about your case/concern which will remain private. We will respond to any inquiry as soon as possible.

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