Atty. Donald Robert Osborn

Atty. Donald Robert Osborn

Donald Robert Osborn is a lawyer practicing tax. Donald received a A.B. degree from Cornell University in 1951, and has been licensed for 69 years.

New York New York 69 yrs experience 69 year
Call (619) 639-3336 Book Appointment

Profile Summary

About Donald Robert Osborn at a glance

Donald Robert Osborn is a Senior Counsel based in New York, New York, practicing at Sullivan And Cromwell Llp. They have 69+ years of legal experience, licensed to practice since 1957. Their practice focuses on tax. Admitted to practice in New York (1957). Educated at Columbia Law School (LL.B., 1957) and Cornell University (A.B., 1951). Recognitions include AV Preeminent. Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Donald Robert Osborn is a lawyer practicing tax
  • Donald received a A.B. degree from Cornell University in 1951, and has been licensed for 69 years
  • Donald practices at Sullivan & Cromwell LLP in New York, NY

Practice Areas Explained

Donald Robert Osborn's Areas of Practice

Each practice area below reflects the types of cases Donald Robert Osborn handles, with a brief overview of what that area of law covers.

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

Donald Robert Osborn is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in New York →

Jurisdictional Context

Why local counsel matters in New York

Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York 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 New York courts without local counsel or pro hac vice admission.

Looking for additional New York attorneys? Browse all attorneys in New York or all attorneys in New York.

Frequently Asked

Common questions about Donald Robert Osborn

Where is Donald Robert Osborn's law office located?
Donald Robert Osborn's law practice is located in New York, New York. The firm is Sullivan And Cromwell Llp. You can contact the office directly through this profile page.
What practice areas does Donald Robert Osborn handle?
Donald Robert Osborn focuses on tax. Each practice area listed reflects experience handling cases of that type in New York.
How long has Donald Robert Osborn practiced law?
Donald Robert Osborn has 69+ years of legal experience and has been licensed since 1957.
Where did Donald Robert Osborn go to law school?
Donald Robert Osborn earned their education at (LL.B., 1957); (A.B., 1951).
How can I contact Donald Robert Osborn for a consultation?
You can contact Donald Robert Osborn 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 Donald Robert Osborn received?
Donald Robert Osborn's notable recognition includes: AV Preeminent.

Practice Areas

Tax

Education

LL.B.
Columbia Law School
- 1957
A.B.
Cornell University
- 1951

Awards

AV Preeminent

Bar Admissions

New York
Admitted: 1957

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