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Jason William Onello
About Jason
Biography
Mr. Onello has resided in Las Vegas for over twenty (20) years. After receiving a BSBA in International Business Management at UNLV, Mr. Onello was accepted to the Boyd School of Law, where he received several awards for his legal writing and analysis. Onello Law Group was founded in 2016, whereafter our office has represented clients in several areas of law, including: family law, criminal defense, personal injury, estate planning, probate, consumer protection, record sealing and gaming law (and more). Onello Law Group has a focus on family law, which often overlaps with other areas of practice, which is why it is important to have an attorney with other practice experience. Outside of legal practice, Mr. Onello enjoys rock climbing, mountain biking, trail running, and Brazilian Jui Jitsu.
Practice Areas
7
Practice Areas
Child Custody
20%
12 years | 100 cases
Divorce and Separation
20%
12 years | 100 cases
Family
20%
12 years | 100 cases
Adoption
10%
12 years | 100 cases
Fees and Rates
Cost
Hourly Rates
$ 300-375 per hour
Payment Methods
- Cash
- Check
- Credit Card
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Chat withLicenses
Licensed in Nevada for 8 years
State: Nevada
Acquired: 2017
No misconduct found
Location
Onello Law Group
9205 W Russell Rd #240, Las Vegas, NV, 89148
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Jason William Onello's Reviews
Showing 1 - 5 of 27 client reviews from Avvo
Posted by Woo | January 26, 2026 | Hired Attorney
This review is from a person who hired this attorney.
Onello law group is amazing, highly recommend!
Jason was amazing, showed empathy and took time to understand my situation. He fought hard for me and I could not be happier with his work and results. Over exceeded my expectations. I highly recommend!
Posted by Brandon | January 21, 2026 | Hired Attorney
This review is from a person who hired this attorney.
Help was delivered
I used Onello Law Group to handle my divorce. Divorce is never fun, But the team at Onello walked me through the process step by step. My lawyer, Leslee always returned calls and messages promptly and her experience proved invaluable during my time of need.
Posted by Cindy | December 22, 2025 | Hired Attorney
This review is from a person who hired this attorney.
Highly recommend
I highly recommend my attorney Leslee Carrascia. She was very professional, knowledgeable and invested in protecting my best interests. Divorce is an emotional and stressful process, but having an attorney who was calm, responsive and clear every step of the way made an enormous difference. I would n...
Posted by anonymous | November 12, 2025 | Hired Attorney
This review is from a person who hired this attorney.
HIGHLY RECOMMEND, SETTLEMENT REACHED INVOLVED UNCONTESTED DIVORCE
⭐️⭐️⭐️⭐️⭐️ I can’t say enough good things about Onello Law Firm. They helped me through what started as an uncontested divorce that turned into a more complicated legal battle — and still managed to reach a great settlement without ever having to go before a judge for a formal hearing. From start to...
Posted by Jon | August 1, 2025 | Hired Attorney
This review is from a person who hired this attorney.
Amazing team!
Leslee is an amazing attorney! Her assistance in my case far exceeded anything that I could’ve ever imagined! Thank you Leslee and Onello LG!
Jason William Onello's Lawyer Endorsements
"Jason is highly knowledgeable and fights for his clients."
"Jason is an outstanding attorney. He is smart, diligent and knows the law. Jason and I worked together on a case that had jurisdiction issues in Nevada and California. He did excellent work both on the trial level and with a writ that he won. I would not hesitate to recommend Jason for any family law matter."
"Jason is an excellent advocate for his clients. He goes out of his way to get his clients the best results he can and is not afraid to go against the grain. There should be more lawyers like him."
"I met Jason during law school and was impressed with his attention to detail, passion for advocacy, and professional manner in which he carries himself. He is committed to providing his clients a great service as they deal with civil litigation. I recommend Jason to assist those facing civil litigation or seeking assistance with business transactions."
"I've known Jason as a co-worker, classmate, friend, and fellow colleague in the family law community. I truly respect Jason for his compassion for law and the diligent work ethic he has in advocating for his clients."
"Jason is a phenomenal attorney but more importantly a compassionate human being. He strives to do everything he can to ensure his clients get honest and zealous representation. I would highly recommend him to anyone looking for an attorney."
Moriel Cohen
Divorce and separation lawyer
Brian Reardon
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Michael Burton
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Experience
Honors
2024
Rising Star, Super Lawyers
2023
Rising Star, Super Lawyers
2022
Rising Star, Super Lawyers
2021
Pro Bono Attorney of The Year, Legal Aid Center of Southern Nevada
2021
Rising Star, Super Lawyers
2020
Weiner Award (Representation of Domestic Violence Victims), Legal Aid Center of Southern Nevada
2020
Rising Star, Super Lawyers
2016
Excellence of the Future Award - Legal Research and Writing, CALI
2014
Award for Excellence of the Future - Lawyering Process, CALI
Work Experience
2017 - Present
Founding Attorney, Onello Law Group
2017 - 2017
Law Clerk, Eighth Judicial District Court, Neveda: Judge Kishner
Associations
2017 - Present
Legal Aid Center of Southern NevadaAttorney - Pro Bono
2017 - Present
American Bar AssociationMember
2017 - Present
Clark County Bar AssociationMember
Sample of Legal Cases
Kragen v. Kragen / D-23-663448-D
Writ of Mandamus GRANTED; matter remanded to District Court and jurisdictional orders vacated.
Education
2016
Boyd Law School
JD - Juris Doctor
2008
University of Las Vegas
International Business Management
Speaking Engagements
2022
Family Law CLE Program for Nevada Lawyers (Attendee)
Family Law
Languages
English
Portuguese
Activity
Legal Answers
Legal Guides
Legal Answers
Q&A
How can I put an ad in the paper for a divorce ?
09 Oct 2024
Q&A
Can child support be modified before 3 years if I am no longer working?
05 Dec 2018
Q&A
Best custody agreement for my 1 year old child?
02 Dec 2017