Robert Arentz

Robert Arentz

Undergraduate school Pepperdine Caruso School of Law

Attorney Robert Arentz

Bar Admissions

Arizona Bar License



Undergraduate school


Pepperdine Caruso School of Law

Juris Doctorate

Robert Arentz is the founding member of Arentz Law Group, P.L.L.C. The firm was founded in Phoenix, Arizona. Mr. Arentz graduated with honors in 1973 from Michigan State University and attended Pepperdine University School of Law, graduating in 1978. Mr. Arentz is admitted to practice law in Arizona, California, various Federal Courts and the United States Supreme Court.

Mr. Arentz has focused his practice over the past 25 years on criminal and DUI defense. He has served as a criminal defense attorney here in Arizona on many high profile and complex criminal cases, including death penalty litigation, numerous felony trials and appeals. In 1984, Mr. Arentz helped to create the Public Defender’s Office in Cochise County, Arizona. He served as director of the office for more than five years. From 1993 until 2010, Mr. Arentz was the Supervising Attorney for Arizona’s largest criminal defense firm.

Mr. Arentz, in addition to managing the firm, limits his practice to criminal law and has successfully represented individuals facing serious criminal charges for the past 25 years. He has represented the accused facing charges from local and state law enforcement and the federal government, including the DEA, FBI and Secret Service. Mr. Arentz relies on his many years of criminal defense experience to provide dedicated, affordable representation to all of his clients.

What Clients Say

  • Phillips Law Group has a proven track record of success. Juan Roque, in particular, is integral to that. He works with integrity, compassion, and an undefeated optimism that makes him a valuable asset.

    Elizabeth Sorathia

    Reviews stars
  • Phillips is the best!! Love all that they do to give back to the community and how much they help those who are experiencing homelessness. ❤️

    Olivia Eldridge

    Reviews stars
  • PLG is the best! Highly recommend. Love that they do so much to help the community.

    Olivia Lemorrocco

    Reviews stars
  • Thank you Phillips Law Group for all the support and back to school assistance we appreciate it.

    Clara Arias

    Reviews stars
Connect With Us
(800) 706-3000

No matter where you are in the US,
we’re here to help.

(800) 706-3000


3101 North Central Ave #1500
Phoenix, AZ 85012

(602) 258-8888 Map


12725 West Indian School Road
Suite E 101
Avondale, AZ 85392

(602) 780-3458 Map


1134 South Stapley Drive,
Suite D-109
Mesa, AZ 85204

(602) 412-3592 Map


2 East Congress Street
Suite 900
Tucson, AZ 85701

(520) 500-5000 Map

San Diego

402 W. Broadway
Suite 400
San Diego, CA 92101


Los Angeles

700 South Flower Street
Suite 1000
Los Angeles, CA 90017


Salt Lake City

4001 South 700 East
Salt Lake City, UT 84107

(801) 583-8888 Map


2033 E Warner Rd.
Unit 105
Tempe, AZ 85284