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Ruben Castillo

b. 1954

United States federal judge

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About Ruben Castillo

Born 1954. Ruben Castillo is an American lawyer and judge.

Rubén Castillo (born August 12, 1954) is a former United States district judge of the United States District Court for the Northern District of Illinois. In 1994, Castillo was the first person of Latino descent to be named a judge in the Northern District of Illinois, and in 2013 the first to become Chief Judge.

Early life and education

Born in Chicago, Illinois to a Mexican-American father and a Puerto Rican mother, Castillo was the first member of his family to finish college. Castillo earned a Bachelor of Arts degree in political science in 1976 from Loyola University in Chicago, working nights as a clerk at the Illinois Circuit Court of Cook County to put himself through school.

Professional career

From 1979 until 1984, Castillo worked in private law practice in Chicago as an associate attorney for the law firm Jenner & Block. In 1984, he was named an Assistant United States Attorney for the Northern District of Illinois. He worked as an Assistant United States Attorney until 1988, when he became a regional counsel for the Mexican American Legal Defense Fund. In 1991, Castillo returned to private law practice, where he worked as a partner at the law firm of Kirkland & Ellis until 1994.

Federal judicial service

On January 27, 1994, President Bill Clinton nominated Castillo to a seat on the United States District Court for the Northern District of Illinois vacated by Nicholas John Bua. At his confirmation hearing before the United States Senate Committee on the Judiciary on March 25, 1994, Castillo told senators that "...in my career I have had the privilege of serving various clients from all walks of life, from some of the corporate 100 organizations to individuals who had literally no assets, and I have always enjoyed the role of being the advocate for those clients, but I really came to a conclusion that I would like to have only one client from now on, and that client being justice, per se, and that is why I want to be a Federal district court judge."

Personal Castillo and his wife, Sylvia Mojica-Castillo, were married in 1978. They live on Chicago's Northwest Side.

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Important facts

Birth century
Occupation
Nationality
Education
Loyola University Chicago, Northwestern University Pritzker School of Law, Northwestern University School of Law
Also known as
Rubén Castillo

People in Ruben Castillo's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Ruben Castillo's

Frequently asked questions

Who is Ruben Castillo?

United States federal judge

When was Ruben Castillo born?

Ruben Castillo was born on 12 August 1954 in Chicago.

What is Ruben Castillo's occupation?

Ruben Castillo is a lawyer and judge.

What nationality is Ruben Castillo?

Ruben Castillo is American.

Sources & further reading

· Wikipedia: Ruben Castillo

· Wikidata: Q15451834

· DBpedia: Rubén Castillo (judge)

Cite this page

APA: Biography.guide. (2026). Ruben Castillo. https://biography.guide/ruben-castillo/

MLA: "Ruben Castillo." Biography.guide, https://biography.guide/ruben-castillo/.

Chicago: "Ruben Castillo." Biography.guide. https://biography.guide/ruben-castillo/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

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