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John Michael Leahy

Criminal defense Attorney at Xenia, OH

4.0   4 reviews

also known as Jack Leahy

  • Licensed for 10 years
    State OH
    Acquired 2013
    Active No misconduct found

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

About John

Learn John’s areas of practice.

Practice areas
  1. Criminal defense
    Passionate, approachable, and confident legal representation throughout the most difficult circumstances our legal system has to offer.

    11 years

  2. Divorce and separation
    Compassionate, dedicated, and knowledgable representation for the most important and challenging circumstances a person can go through.

    11 years

  3. Personal injury
    Confident, approachable representation for the unexpected. Experienced in obtaining fair and just results for clients.

    11 years

  4. Probate
    Experienced in the entire Probate process. From full administration of an Estate, to the establishment of Guardianships, to Adoption. Backed by over 55 years of experience.

    11 years

  5. Wills and living wills
    Experienced in the preparation of Wills, Living Wills, Powers of Attorney, Guardianships, Transfers on Death, and all processes related to the Administration of Estates. Backed by over 55 years of experience.

    11 years

Attorney John M. Leahy graduated Indiana University – Bloomington with a Bachelor of Arts in Political Science. He went on to receive his Juris Doctorate from the University of Dayton School of Law. He is a member of the Greene County Bar Association, Ohio State Bar Association, and Ohio Association of Criminal Defense Lawyers.

Mr. Leahy is admitted to practice law in the State of Ohio, as well as the United States District Court for the Southern District of Ohio.

Prior to joining Peterson & Peterson, Mr. Leahy practiced law in a busy criminal defense firm in downtown Dayton, representing clients throughout the Miami Valley as well as protecting the rights of clients in United States District Court. Mr. Leahy has experience representing every degree of felony in the State of Ohio. In addition to his criminal defense experience, Mr. Leahy has vigorously protected the rights of clients in Divorce, Child Support, Child Custody, and Personal Injury.  Mr. Leahy further enjoys assisting the great people of the Miami Valley in planning for their retirement and securing the future of their loved ones in the creation and maintenance of wills, guardianships, and estate administration.

Mr. Leahy currently resides in Dayton. He is an avid sports fan who prefers to spend his time away from the office on any one of the local Greene County golf courses.


87 S. Progress Dr.
Xenia, OH, 45385

Criminal Defense lawyers nearby


4.0 / 5.0
  4 customer reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Posted by Michael Seibert | September 10, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Simply the best
Never having gone through a divorce before, I had no idea what to do or how to handle it. The only think I prayed for was to have council that understood me and showed caring and compassion. I found him in Atty Leahy. He knows his stuff and he knew how to make this journey for me as comfortable as possible in a very uncomfortable situation. When I say he is simply the best, he is. This man can be trusted and relied upon. I was very lucky to have found him.
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Posted by Monica | November 6, 2014
Professional, Intelligent, Caring
You can trust this man. John Leahy took the time to listen. He gave our family informed, experienced advice and expertly lead us through the legal system. The positive outcome for our sons serious felony charge was due to the groundwork and persistent interest John gave his case. John Leahy always returned our calls ,we felt cared for and that our situation mattered to him.
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Posted by anonymous | October 27, 2014
Thank you John
We would recommend John to represent anyone needing legal help. We needed an attorney and he was there for us. John was able to answer our questions quickly and accurately assuring us that everything would work out.
Posted by anonymous | August 18, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Beginner level experience
Was not successful in negotiating even minor considerations in my case. I found out he was telling me one thing and telling the prosecutor something completely different. If anything he hurt my case. Beware he is NOT what he seems.


  • Free Consultation 30 minutes
Payment methods
Cash, Check, Credit Card


AVVO RATING 7.0 (Very Good)

Work Experience

  • Attorney
  • Peterson & Peterson, LLC
  • 2016 - Present
  • Attorney
  • Slicer Law Office
  • 2013 - 2016


  • Indiana University Bloomington
  • N/A
  • University of Dayton
  • N/A


  • Greene County Bar Association
  • 2016 - Present
  • Ohio State Bar Association
  • 2013 - Present
  • Ohio Association of Criminal Defense Lawyers
  • 2013 - Present

Languages Spoken

  • English

Attorney endorsements

Received (6)
Given (3)
Endorse John
Juvenile law Attorney | Apr 26
Relationship: Worked together on matter
"John is an intelligent, hard working attorney, who cares about his clients. I've seen him be successful not just on juvenile matters, but also criminal matters."
Unknown Attorney | Jan 16
Relationship: Fellow lawyer in community
"Jack is a hard working intelligent lawyer who goes the extra mile for his clients."
Criminal defense Attorney | Aug 26
Relationship: Fellow lawyer in community
"Jack is a top notch criminal defense attorney who works diligently to achieve his client's goals."
Unknown Attorney | Mar 24
Relationship: Fellow lawyer in community
"Mr. Leahy is detailed oriented and always puts the needs of clients first. I endorse Mr. Leahy with no hesitation."
Criminal defense Attorney | Jan 21
Relationship: Fellow lawyer in community
"Jack has a vast understanding of complicated criminal law issues. A rising name in the legal community."
General practice Attorney | Sep 01
Relationship: Friend
"I have known Mr. Leahy for a long time. I know him as a friend, former classmate, and as a professional. I would feel confident sending friends and family to Mr. Leahy for any legal matter."
View more endorsements