as of 6/18/2026 4:40:57 AM

Dean William O'Connor

DEAN W. O'CONNOR PLLC
2850 E. Camelback Rd. #200
Phoenix, Arizona 85016-4316

(602) 956-9555

Not available

Date Admitted

May 01, 1980

Illinois Registration Status

Not authorized to practice law due to discipline and has not demonstrated required MCLE compliance – Last Registered Year: 2013

Malpractice Insurance

No malpractice report as attorney is disciplined

Public Record of Discipline and Pending Proceedings
Case(s) below are identified by caption and Commission case number. If there is more than one case, the cases are listed from most recent to oldest. A case may have more than one disposition or more than one component to a disposition, in which case each disposition and component is also listed separately within that case record, again in an order from most recent to oldest.

Click on
Case Research
to access any documents regarding this lawyer that are in our database. Case Research contains most disciplinary opinions of the Supreme Court and most disciplinary orders and board reports issued since 1990. If Case Research does not contain the information you are seeking, please contact the Commission's Clerk's Office for assistance. Contact information for the Clerk's office is available under Clerk's Office Services.

In re O'Connor, Dean William, 2021PR00088
Disposition Disbarment
Effective Date of Disposition 03/25/2022
End Date of Disposition No disposition end date scheduled at this time. Discipline continues until further order of the Court.
Definition of Disposition Disbarment is a determination that the lawyer has engaged in misconduct warranting the most serious sanction. The disbarred lawyer is not authorized to practice law during the period of the disbarment and may not return to the practice of law unless and until he or she has demonstrated his or her rehabilitation, good character, and current knowledge of the law in a subsequent reinstatement case, which may not be filed until five years after the effective date of the disbarment.
Case Summary Mr. O'Connor was licensed in Illinois in 1980 and in Arizona in 1988. An Arizona disciplinary hearing panel disbarred him for engaging in a pattern of misconduct in three separate matters. In one matter, he converted $40,000 in funds belonging to a bankruptcy estate and disbursed over $230,000 in insurance proceeds to his client without disclosing the receipt or disbursement of those proceeds to the court. In another matter, he did not adequately communicate with his client and failed to research issues involved in his client's matter. In a third matter, he advanced non-meritorious claims and contentions, made false representations in a court filing, and made false statements to the Arizona State Bar during its investigation into his conduct. The Supreme Court of Illinois imposed reciprocal discipline and disbarred him.
In re O'Connor, Dean William, 2020PR00071
(One of multiple dispositions on this case)
Disposition Probation
Effective Date of Disposition 04/12/2021
End Date of Disposition No disposition end date scheduled at this time. Probation continues until compliance with probationary condition(s).
Definition of Disposition Probation reflects a determination that the lawyer has engaged in misconduct, but also a finding that the lawyer may continue to practice law pursuant to specified conditions under ARDC supervision without posing a risk to the public, profession, or courts. As a result, the lawyer may continue to practice law during the period of probation, subject to the conditions imposed by the Court. Probation may be ordered for a specified period of time or for a specified period of time and until further order of the Court. Probation may be ordered in conjunction with a suspension, which may be stayed in whole or in part. A stay defers that portion of the suspension as long as the lawyer complies with probationary conditions. If the lawyer successfully completes probation, the lawyer is not actually suspended during any portion of the stayed suspension.
In re O'Connor, Dean William, 2020PR00071
(One of multiple dispositions on this case)
Disposition Suspension for a specified period
Effective Date of Disposition 02/11/2021
End Date of Disposition 04/12/2021
Definition of Disposition Suspension for a specified period reflects a determination that the lawyer has engaged in misconduct and that the misconduct warrants an interruption of the lawyer's authority to practice law during the suspension period, which is a fixed period of time identified in the Supreme Court's order. The lawyer is not authorized to practice law during the period of the suspension.
Case Summary Mr. O’Connor was licensed in Illinois in 1980 and in Arizona in 1988. The Attorney Probable Cause Committee of the Supreme Court of Arizona entered an order admonishing him and placing him on conditional probation for mishandling client funds and overdrawing his client trust account. In addition, in a subsequent disciplinary matter, the Presiding Disciplinary Judge of the Supreme Court of Arizona suspended Mr. O’Connor for 60 days and placed him on a two-year period of probation upon his reinstatement for eliciting false testimony from his client and making a false statement to Arizona disciplinary authorities. The Supreme Court of Illinois imposed reciprocal discipline and suspended him for 60 days, followed by a term of probation subject to the conditions imposed by Arizona and continuing until he successfully completes the conditions imposed in Arizona. The suspension is effective on February 11, 2021.
Check carefully to be sure that you have selected the correct lawyer. At times, lawyers have similar names. Disciplinary results displayed above, if any, include information relating to any and all public discipline, court-ordered disability inactive status, reinstatement and restoration dispositions, and pending public proceedings. Investigations are confidential and information relating to the existence or status of any investigation is not available. For additional information regarding data on this website, please contact ARDC at (312) 565-2600 or, from within Illinois, at (800) 826-8625.

ARDC makes every effort to maintain the currency and accuracy of Lawyer Search. If you find any typographical errors in the Lawyer Search information, please email registration@iardc.org. Attorneys may make changes to their contact information on the ARDC’s Online Registration page, or by completing and submitting the Change of Address form available on our Address Changes page. Name changes require the filing of a motion with the Supreme Court. Please consult our Name Change Requests page for details.