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Roy Cohn

Roy Marcus Cohn was an American lawyer and political fixer who became prominent as a prosecutor in the Rosenberg espionage case and as chief counsel to Senator Joseph McCarthy during the Army–McCarthy hearings.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Roy Marcus Cohn was an American lawyer and political fixer who became prominent as a prosecutor in the Rosenberg espionage case and as chief counsel to Senator Joseph McCarthy during the Army–McCarthy hearings. He later became a powerful New York City lawyer and political operative, and he was an early mentor and lawyer to Donald Trump. Cohn remained a controversial figure because of his aggressive tactics, anti-communist activism, and his closeted homosexuality.

Early life and education

Roy Cohn was born in the Bronx in 1927 and studied at Columbia University and Columbia Law School. He came from a legal family and entered public life at a young age.

McCarthy era

Cohn became nationally known as chief counsel to Senator Joseph McCarthy and played a central role in anti-communist investigations during the Red Scare. His work during this period made him both influential and deeply controversial.

After the McCarthy era, Cohn worked as a New York attorney and political fixer for prominent clients, including business leaders and organized-crime figures. He was known for aggressive, combative tactics and for shaping his clients’ public strategy.

Relationship with Donald Trump

Cohn advised and represented Donald Trump early in Trump’s career and is widely credited with influencing Trump’s confrontational style. Their relationship has remained a major part of Cohn’s public legacy.

Death and legacy

Cohn died in 1986 from AIDS-related complications, though he publicly denied having AIDS and said he had liver cancer. He remains a subject of books, documentaries, and dramatizations because of his political influence and contradictions.

Key facts

  • Cohn first gained national attention as a prosecutor in the trial of Julius and Ethel Rosenberg.
  • He served as chief counsel to Senator Joseph McCarthy during the Army–McCarthy hearings.
  • Cohn was Donald Trump’s lawyer and mentor during Trump’s early business career.
  • He was widely described as a closeted gay man who publicly attacked LGBTQ+ people while hiding his own sexuality.
  • Cohn died in 1986 from AIDS-related complications after publicly claiming to have liver cancer.
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Canadian context

Cohn matters to Canadian readers mainly as a major Cold War-era American political figure whose tactics and Trump-era influence are often discussed in North American political history.

Frequently asked questions

Who was Roy Cohn?
Roy Cohn was an American lawyer, prosecutor, and political operative known for the Rosenberg case, his role with Senator Joseph McCarthy, and later his influence as a New York power broker and Trump mentor.
How did Roy Cohn die?
He died on August 2, 1986, from complications of AIDS in Bethesda, Maryland. At the time, he publicly claimed he had liver cancer and denied being gay.
What did Roy Cohn do?
He prosecuted major Cold War cases, served as McCarthy’s chief counsel, and later represented influential business and political clients. He also acted as a behind-the-scenes fixer in New York politics.
Roy Cohn sexual orientation
Cohn was widely identified as a closeted gay man. Multiple sources note that he publicly opposed LGBTQ+ people while privately maintaining same-sex relationships.
Roy Cohn and Donald Trump
Cohn was Trump’s lawyer and mentor in Trump’s early business years. Sources describe him as a major influence on Trump’s combative approach to politics and media.
Roy Cohn documentary
The best-known documentary about him is *Where’s My Roy Cohn?*, which examines his career, influence, and contradictions.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Roy_Cohn
    Supports: Birth and death dates, early fame in the Rosenberg trial, and role as McCarthy's chief counsel.
  2. Encyclopaedia Britannicahttps://www.britannica.com/biography/Roy-Cohn
    Supports: Biography, death place, career overview, clients, and connection to Donald Trump.
  3. The First Amendment Encyclopediahttps://firstamendment.mtsu.edu/article/roy-cohn/
    Supports: McCarthy-era role and impact on civil liberties.
  4. EBSCO Research Startershttps://www.ebsco.com/research-starters/history/roy-cohn
    Supports: Career summary, Rosenberg trial, McCarthy work, and disbarment/controversy.
  5. BBC Culturehttps://www.bbc.com/culture/article/20240517-roy-cohn-the-mysterious-us-lawyer-who-helped-donald-trump-rise-to-power
    Supports: Trump mentorship, closeted sexuality, and AIDS-related death.
  6. Historyhttps://www.history.com/articles/roy-cohn-mccarthyism-rosenberg-trial-donald-trump
    Supports: Rosenberg trial, McCarthy role, Trump mentorship, closeted sexuality, and AIDS-related death.
  7. United Electrical, Radio and Machine Workers of Americahttps://www.ueunion.org/political-action/2016/roy-cohn-one-of-ue%E2%80%99s-worst-enemies-was-donald-trump%E2%80%99s-mentor
    Supports: Trump mentorship and influence on Trump's tactics.
  8. Sony Pictures Classicshttps://www.sonyclassics.com/wheresmyroycohn/
    Supports: Documentary *Where's My Roy Cohn?* and overview of his major controversies.