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Who Is Mariska Hargitay’s Biological Father? What She Revealed in My Mom Jayne

Mariska Hargitay said she learned at 25 that Nelson Sardelli was her biological father. Mickey Hargitay raised her, and she continued to regard him as her father.
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Mariska Hargitay identified Italian singer and entertainer Nelson Sardelli as her biological father. Actor Mickey Hargitay, however, raised her and remained her father in the relationship that mattered to her. She shared the family story in My Mom Jayne, her documentary about her mother, Jayne Mansfield.

Who did Mariska Hargitay identify as her biological father?

Hargitay named Nelson Sardelli, an Italian singer and entertainer, as her biological father. The distinction matters: Sardelli is the biological father in Hargitay’s account; Mickey Hargitay was the man who raised her and whom she continued to call her father.

As she put it to Vanity Fair, “I’m Mickey Hargitay’s daughter—that is not a lie.” She described My Mom Jayne in part as a love letter to Mickey.

How did she learn about Sardelli?

Hargitay said she was 25 when a contact connected to her mother’s fan club showed her a photograph and raised the possibility that Sardelli was her biological father. The revelation shook her sense of identity. In a Los Angeles Times interview published June 27, 2025, she recalled: “It felt like the melting of my identity.”

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She said she confronted Mickey, who denied the claim. Hargitay later chose not to raise the subject with him again. She has described loyalty to Mickey as a significant part of how she responded.

What was her relationship with Sardelli?

Hargitay said she met Sardelli at one of his performances when she was 30. Over time, she developed a relationship with him and his daughters. Her account also places the family history in the context of Mansfield’s relationship with Sardelli while separated from Mickey, followed by Mansfield’s reconciliation with Mickey before Mariska’s birth in 1964.

Hargitay has said her mother returned to Mickey because he could offer Mariska a loving, stable home. These details come from Hargitay’s recollections as reported in interviews; the coverage cited here does not establish independent genetic confirmation.

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How does My Mom Jayne tell the story?

My Mom Jayne is Hargitay’s documentary directorial debut, centered on her mother’s life and the family story. The film’s premiere at Cannes on May 17, 2025, and its HBO/Max release on June 27, 2025, were reported by Vanity Fair and the Los Angeles Times. Those reports establish its 2025 release, not its current streaming availability.

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For Hargitay, telling the story did not erase Mickey’s role. Her comments hold both parts together: she named Sardelli as her biological father while affirming that Mickey was her father and the person who raised her.

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