Donald Eugene O'Brien (September 30, 1923 – August 18, 2015) was a United States district judge of the United States District Court for the Northern District of Iowa and the United States District Court for the Southern District of Iowa. He was an officer in the United States Army Air Corps in World War II, a Democratic nominee for the United States House of Representatives, a United States Attorney, and a political organizer.

Donald Eugene O'Brien
Chief Judge — U.S. District Court for the Northern District of Iowa
Born 1923 in Marcus, IA
Died 2015 in Sioux City, IA
FJC ID: 1791
- Gender
- Male
- Race
- White
Prior employment
- Judicial Conference of the United StatesMember · 1991–1997
- Private practice, Sioux City, Iowa1948–1949, 1967–1978
U.S. attorney for the Northern District of Iowa1961–1967- Sioux City [Iowa] Municipal CourtJudge · 1959–1960
- Woodbury County, IowaCounty attorney · 1955–1958
- Sioux City, IowaAssistant city attorney · 1949–1953
Air CorpsU.S. Army lieutenant · 1942–1945
Appointments
1978–1990 · Appointed by Jimmy Carter (Democratic)Term ended: Reassignment
1978–2015 · Appointed by Jimmy Carter (Democratic)Term ended: Death
Education
LL.B. · 1948