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Office | Phoenix, AZ

Cosmas Onyia, P.C.

4.9
4 reviews

3636 N. Central Avenue, Suite 800, Phoenix, AZ 85012-1938, U.S.A.

Child Custody and Divorce

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Member Cosmas M.
Onyia

About Cosmas Onyia, P.C.

Cosmas Onyia, P.C. is a law firm with an office in Phoenix, AZ. At this office location, there is 1 lawyer practicing child custody, divorce.

Awards

Silver Client Champion
This award is granted to attorneys who have received at least 3 client reviews, and have an average review score of 4.0 or higher.
Champion Badge Silver

Client Champion Awards

Client Champion awards recognize those attorneys who excel at service as affirmed by their clients. The awards, based on the quantity and quality of an attorney’s Martindale-Hubbell client reviews, demonstrate an ongoing commitment to delivering excellent client service. Award recipients stand out from their peers with a platinum, gold or silver icon.

Champion Badge Silver

At least three reviews and a score of 4.0 or higher.

Cosmas Onyia, P.C. got this award in 2021

Champion Badge Gold

At least six reviews and a score of 4.2 or higher.

Champion Badge Platinum

At least ten reviews and a score of 4.5 or higher.

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Distinguished: An excellent rating for a lawyer with some experience. This rating indicates the attorney is widely respected by their peers for high professional achievement and ethical standards.

Martindale-Hubbell Peer Notable Rating

Notable: This rating indicates that the lawyer has been recognized by a large number of their peers for strong ethical standards.

Avvo Awards

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Avvo Client Choice

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Reviews for Cosmas Onyia, P.C.

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Overall Rating
4.9
See All Reviews
4
Showing 1-4 of 4 client reviews from Lawyers.com
Lawyers.com Rating Snapshot
5 stars
75%
4 stars
25%
3 stars
0%
2 stars
0%
1 star
0%
What do people say on Lawyers.com?
Communication
5.0
Quality of Service
5.0
Responsiveness
5.0
Value for Money
4.5
Divorce
Posted by anonymous
July 04, 2025
Hired Attorney Cosmas Onyia

Cosmas is an excellent divorce attorney. He was always well-prepared in court, especially for cross-examinations, and submitted clear, timely documents that made my case stronger. He took the time to listen and never rushed me, offering practical advice that made me feel supported throughout the process. If you’re looking for a divorce lawyer who truly cares and knows how to handle your case effectively, I highly recommend him.

 
Family Law
Posted by Archie
January 18, 2022
Hired Attorney Cosmas Onyia

Thank you so much Mr Onyia for getting me through another crisis and making it look so easy. Your logical and calm demeanor had kept me at ease during this anxious time concerning the custody of my son. Your a heaven sent, like having Einstein, Mohammed Ali and Mike Tyson in my corner at the same time. If your looking for representation in family courts, this is your man. He knows his way around the courtroom. Mr Onyias experience shined throughout my case that went to trial. Mr Onyia was in control the whole time. He knows the law and how to navigate through difficult opposition and circumstances. I've shopped around for family court attorneys in 2019, they all seemed unreasonable and extravagant with their court fee estimates. Mr Onyia was the only one who seemed honest, fair and reasonable. He was worth every penny and more in 2019. He never inflated extra costs or expenses like most lawyers. Now I've just finished up with my uphill custody modification battle in 2022. We won.

 
Divorce
Posted by anonymous
November 03, 2020
Hired Attorney Cosmas Onyia

Mr. Onyia is a magnificent lawyer, and I highly recommend him to anyone looking for a dedicated and passionate lawyer. He is eloquent in his delivery, as well as direct and efficient. As a client, I felt prepared and looped in at all times, without needing to chase him for an update. If you’re looking for a lawyer who will give you 110%, look no further, he’s the one.

 
Family Law
Posted by anonymous
August 22, 2011
Hired Attorney Cosmas Onyia

He is a great gentleman and is very caring and concerned about his clients. He is also very knowledgeable when it comes to Family Law.

Services

Areas of Law

  • Family Law 2
    • Child Custody
    • Divorce

Office Details

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Cosmas Onyia, P.C.

4.9
4 reviews

3636 N. Central Avenue, Suite 800Phoenix, AZ 85012-1938U.S.A.

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