Diarmuid Fionntain O'Scannlain
Appointed by President Ronald Reagan in 1986 and confirmed by voice vote, Diarmuid Fionntain O'Scannlain is a Judge on the U.S. Court of Appeals for the Ninth Circuit. He earned a law degree from Harvard Law School in 1963. Sources ↓
- Born
- 1937 · age 89
- Appointed by
- Ronald Reagan, 1986
- Confirmed
- by voice vote
- Education
- St. John's 1957 · Harvard Law School 1963
- Succeeded
- Robert Boochever
- Succeeded by
- Danielle Jo Forrest
Federal judicial service
| Year | Court | Appointed by | Vote |
|---|---|---|---|
| 1986 | Ninth Circuit succeeded Robert Boochever | Reagan (R) | Voice vote |
Party letters show the appointing president’s party, not the judge’s own. A voice vote means the chamber approved aloud. No senator-by-senator tally is recorded.
Confirmation vote
Voice vote
The Senate approved this confirmation aloud, with no senator-by-senator tally recorded. Recorded roll-call votes begin in 1989.
Education
| St. John's University | B.A. | 1957 |
| Harvard Law School | J.D. | 1963 |
| University of Virginia School of Law | LL.M. | 1992 |
Before the bench
Professional career before and outside the federal bench, as recorded by the Federal Judicial Center.
| U.S. Army Reserve, JAG Corps (retired as major) | 1955-1978 |
| Tax attorney, Standard Oil Company of New Jersey and New York City | 1963-1965 |
| Private practice, Portland, Oregon | 1965-1969, 1975-1986 |
| Deputy attorney general, State of Oregon | 1969-1971 |
| Public utility commissioner, State of Oregon | 1971-1973 |
| Director, Oregon Department of Environmental Quality | 1973-1974 |
| Consultant, Office of the President-Elect of the United States | 1980-1981 |
| Team leader, President's Private Sector Survey on Cost Control (Grace Commission) | 1982-1983 |
| Chairman, Advisory Panel to the Secretary of the U.S. Department of Energy | 1983-1985 |
Questions & answers
- Who appointed Diarmuid Fionntain O'Scannlain?
- President Ronald Reagan appointed Diarmuid Fionntain O'Scannlain to the U.S. Court of Appeals for the Ninth Circuit in 1986.
- Was Diarmuid Fionntain O'Scannlain appointed by a Democrat or a Republican?
- Diarmuid Fionntain O'Scannlain was appointed by President Ronald Reagan, a Republican. JudicialFinder records the appointing president's party, not a judge's own politics.
- What was Diarmuid Fionntain O'Scannlain's confirmation vote?
- Diarmuid Fionntain O'Scannlain was confirmed by voice vote on September 25, 1986. No senator-by-senator tally was recorded.
- Which court is Diarmuid Fionntain O'Scannlain on?
- Diarmuid Fionntain O'Scannlain is a Judge on the U.S. Court of Appeals for the Ninth Circuit.
Sources
Each fact on this page traces to a primary public record.
- FJC Biographical Directory
- Wikidata
- Portrait: Administrative Office of the United States Courts (Public domain), via Wikimedia Commons
How we source & reconcile data → Data & Sources
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40 years on the U.S. Court of Appeals for the Ninth Circuit. Data as of 2026-09-28. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).