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September 11, 2026Short & citedBlog
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Civic Brief • Political Figure

Kimberly Guilfoyle

Kimberly Guilfoyle is an American lawyer, former prosecutor, television personality, and political figure.

Updated September 11, 20261 min readCited sources

Kimberly Guilfoyle is an American lawyer, former prosecutor, television personality, and diplomat who served as U.S. ambassador to Greece. She is also known for her roles at Fox News and her past marriage to Gavin Newsom.

What it is

Kimberly Guilfoyle is a public figure with a career spanning law, media, and politics. She worked as a prosecutor in California, co-hosted Fox News' *The Five*, and later became a political adviser and diplomat.

Key details

Born March 9, 1969, in San Francisco, she earned a J.D. from the University of San Francisco School of Law. She was married to Gavin Newsom (2001–2006) and later engaged to Donald Trump Jr. (2021–2024). She was sworn in as U.S. ambassador to Greece on September 29, 2025.

Why it matters

Guilfoyle's career illustrates a shift from legal and media roles into high-profile political appointments. Her engagement to Donald Trump Jr. and her ambassadorship highlight her ties to the Trump political network.

In short

  • Former prosecutor and Fox News co-host.
  • Married to Gavin Newsom, later engaged to Donald Trump Jr.
  • Sworn in as U.S. ambassador to Greece in September 2025.
  • Born March 9, 1969, in San Francisco.

Quick questions

Who is Kimberly Guilfoyle?
An American lawyer, former prosecutor, television personality, and diplomat, known for Fox News and as U.S. ambassador to Greece.
How old is Kimberly Guilfoyle?
She was born March 9, 1969, making her 57 as of July 2026.
What happened to Kimberly Guilfoyle?
She left Fox News in 2018, worked in Republican politics, and became ambassador to Greece in 2025. Her engagement to Donald Trump Jr. ended in late 2024.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Kimberly_Guilfoyle
    Supports: Birth date, education, San Francisco prosecutor role, marriage to Gavin Newsom, engagement to Donald Trump Jr.
  2. IMDb — https://www.imdb.com/name/nm1367065/bio/
    Supports: Birth date and birthplace.
  3. Britannica — https://www.britannica.com/biography/Kimberly-Guilfoyle
    Supports: Career as prosecutor and Fox News host, marriage to Gavin Newsom, engagement to Donald Trump Jr., ambassador role.
  4. U.S. Embassy in Greece — https://gr.usembassy.gov/u-s-ambassador-to-greece-kimberly-ann-guilfoyle/
    Supports: Sworn in as U.S. ambassador to Greece on September 29, 2025; first woman in the role; residency and family note.
  5. Ballotpedia — https://ballotpedia.org/Kimberly_Guilfoyle
    Supports: Political roles, Fox News career, COVID-19 diagnosis, marriage to Gavin Newsom.