John Percy Nields
Senior Judge of the United States District Court for the District of Delaware
In office September 30, 1941 – August 26, 1943
Judge of the United States District Court for the District of Delaware
In office July 3, 1930 – September 30, 1941
Appointed by	Herbert Hoover
Preceded by	Hugh M. Morris
Succeeded by	Paul Conway Leahy
United States Attorney for the District of Delaware
In office 1903–1916
President	Theodore Roosevelt William Howard Taft Woodrow Wilson
Preceded by	William Michael Byrne
Succeeded by	Charles F. Curley
Personal details
Born	John Percy Nields (1868-08-07)August 7, 1868 Wilmington, Delaware, U.S.
Died	August 26, 1943(1943-08-26) (aged 75) Nahant, Massachusetts, U.S.
Education	Harvard University (AB, LLB)
Military service
Branch/service	United States Army
Unit	Ordnance Corps
Battles/wars	World War II

John Percy Nields (August 7, 1868 – August 26, 1943) was a United States district judge of the United States District Court for the District of Delaware.

Born in Wilmington, Delaware, Nields received an Artium Baccalaureus degree from Harvard College in 1889 and a Bachelor of Laws from Harvard Law School in 1892.

Nields worked in private practice in Wilmington from 1892 to 1903. He was the United States attorney for the District of Delaware from 1903 to 1916, thereafter returning to private practice in Wilmington in 1930. He was a captain in the United States Army Ordnance Corps during World War II in 1918.^[1]

On June 20, 1930, Nields was nominated by President Herbert Hoover to a seat on the United States District Court for the District of Delaware vacated by Judge Hugh M. Morris. Nields was confirmed by the United States Senate on July 3, 1930, and received his commission the same day. He assumed senior status on September 30, 1941, serving in that capacity until his death on August 26, 1943, in Nahant, Massachusetts.^[1]

• John Percy Nields at the Biographical Directory of Federal Judges, a publication of the Federal Judicial Center.