Atty. John Astor Dienner III

Atty. John Astor Dienner III

John Astor Dienner III is a lawyer practicing civil litigation, commercial litigation, civil appeals and 5 other areas of law. John received a B.A. degree from DePauw University in 1969, and has been licensed for 54 years.

Chicago Chicago 54 yrs experience 54 year
Call (312) 583-7662 Book Appointment

Profile Summary

About John Astor Dienner III at a glance

John Astor Dienner III is a Member based in Chicago, Illinois, practicing at Kubasiak, Fylstra, Thorpe & Rotunno, P.C.. They have 54+ years of legal experience, licensed to practice since 1972. Their practice focuses on employment, business, construction, white collar, and litigation. Admitted to practice in Illinois (1972), US District Court, Northern District of Illinois (1972), US Supreme Court (1975), and US Tax Court (1983). Educated at John Marshall Law School (J.D., 1972) and DePauw University (B.A., 1969). Recognitions include AV Preeminent. Active member of Chicago Bar Association. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John Astor Dienner III is a lawyer practicing civil litigation, commercial litigation, civil appeals and 5 other areas of law
  • John received a B.A. degree from DePauw University in 1969, and has been licensed for 54 years
  • John practices at Kubasiak, Fylstra, Thorpe & Rotunno, P.C. in Chicago, IL

Practice Areas Explained

John Astor Dienner III's Areas of Practice

Each practice area below reflects the types of cases John Astor Dienner III handles, with a brief overview of what that area of law covers.

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

John Astor Dienner III is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in Illinois →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

John Astor Dienner III is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Construction Law

John Astor Dienner III is one of 40,689 construction attorneys indexed nationally. Browse construction attorneys in Illinois →

White Collar Crimes

John Astor Dienner III is one of 20,025 white collar attorneys indexed nationally. Browse white collar attorneys in Illinois →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

John Astor Dienner III is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about John Astor Dienner III

Where is John Astor Dienner III's law office located?
John Astor Dienner III's law practice is located in Chicago, Illinois. The firm is Kubasiak, Fylstra, Thorpe & Rotunno, P.C.. You can contact the office directly through this profile page.
What practice areas does John Astor Dienner III handle?
John Astor Dienner III focuses on employment, business, construction, white collar, litigation. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has John Astor Dienner III practiced law?
John Astor Dienner III has 54+ years of legal experience and has been licensed since 1972.
Where did John Astor Dienner III go to law school?
John Astor Dienner III earned their education at (J.D., 1972); (B.A., 1969).
How can I contact John Astor Dienner III for a consultation?
You can contact John Astor Dienner III directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has John Astor Dienner III received?
John Astor Dienner III's notable recognition includes: AV Preeminent.

Education

J.D.
John Marshall Law School
- 1972
B.A.
DePauw University
- 1969

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1972
US District Court, Northern District of Illinois
Admitted: 1972
US Supreme Court
Admitted: 1975
US Tax Court
Admitted: 1983

Reviews

5.0
1 Review
5 0
4 0
3 0
2 0
1 0
These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.