
Giacomo Gianniotti Biography: Wife, Films, Age, Parents, Height, Ethnicity, Net Worth, Siblings
Giacomo Keaton Gianniotti, famously known as Giacomo Gianniotti, is an Italian-Canadian actor known for his compelling performances in film and television, most notably as Dr. Andrew DeLuca in the medical drama Grey’s Anatomy (2015–2021).
His bilingual fluency in English and Italian has enabled him to work across North American and European markets, with standout roles as the title character in the Italian film Diabolik: Ginko Attacks! (2022) and Diabolik: Who Are You? (2023).
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Profile
- Full Name: Giacomo Keaton Gianniotti
- Stage Name: Giacomo Gianniotti
- Born: 19, June 1989
- Age: 35 years old
- Birthplace: Rome, Italy
- Nationality: Italian-Canadian
- Occupation: Actor, Producer, Director
- Height: 1.8m
- Parents: Mr. Gianniotti and Mrs. Gianniotti
- Siblings: Isabella Gianniotti
- Spouse: Nichole Gustafson (m. 2019)
- Children: None
- Relationship: Married
- Net Worth: $1 million to $2 million
Early Life and Education
Giacomo Keaton Gianniotti was born on June 19, 1989, in Rome, Italy, to an Italian musician father and a Canadian artist mother. After his parents’ marriage ended in 1994, he moved with his mother to her hometown of Parry Sound, Ontario, Canada, where he was raised alongside his sister, Isabella.
Gianniotti attended Cardinal Carter Academy for the Arts in Toronto, where he fostered his passion for performance, and later graduated from Humber College’s Theatre Program.
He also completed an actor’s residency at Norman Jewison’s Canadian Film Centre in Toronto. His ethnicity is Italian-Canadian, and his religious beliefs are not publicly disclosed.

Career
Giacomo Gianniotti began his acting career at the age of 10 with a small role in Giulio Base’s 1999 film La Bomba, which was filmed at Cinecittà in Rome alongside Shelley Winters and Vittorio Gassman.
After moving to Canada, he honed his craft through theatre training before landing his television debut in the Italian series Medicina Generale (2010). His early career included guest roles on Beauty & the Beast and Copper (2013), followed by recurring parts as Lord Julien in Reign (2013) and Leslie Garland in Murdoch Mysteries (2013–2014, 2023).
These roles showcased his ability to navigate both Canadian and international productions. His breakthrough came in 2015 when he joined Grey’s Anatomy as Dr. Andrew DeLuca, initially a guest star before becoming a series regular in 2016.
His portrayal of the charismatic surgeon, alongside co-star Stefania Spampinato as his sister, resonated with audiences, earning him a 2021 Tell-Tale TV Award for Favorite Actor in a Network Drama Series. Gianniotti also directed an episode of Grey’s Anatomy and crossed over to its spin-off Station 19.
In 2021, he voiced Giacomo in Pixar’s Luca, a role tied to his Italian heritage, and appeared in the Jesse Owens biopic Race (2016). His production company, co-founded with a friend, produced the independent film Acquainted (2018), in which he starred and served as executive producer.
Gianniotti’s career took a bold turn in 2022 when he replaced Luca Marinelli as the iconic thief in Diabolik: Ginko Attacks! and its sequel Diabolik: Who Are You? (2023), embracing a colder, more disciplined character that contrasted with his warm persona.
In 2023, he starred as Elia in Netflix’s Italian series Inganno (Deceitful Love), an adaptation of the UK’s Gold Digger, exploring a controversial romance. His commitment to roles that challenge stereotypes and his bilingual versatility continue to define his work, with upcoming Italian projects signalling his growing influence in European cinema.
Social Media
- Instagram Handle: @giacomo_gianniotti
- Twitter Handle: @Giacomo_G

Personal Life
Giacomo Gianniotti married makeup artist Nichole Gustafson on April 28, 2019, in a romantic ceremony held in Italy, celebrating their relationship that began after they met on the set of Grey’s Anatomy.
Although the couple does not have children, they share a close and supportive bond, often seen travelling together and balancing their lives between Toronto, Rome, and Los Angeles, which reflects both their personal roots and professional commitments.
Their marriage is characterized by mutual respect and privacy, with limited public disclosure about their home life beyond occasional glimpses on social media.
Filmography
- La Bomba (1999) – Minor Role
- Medicina Generale (2010) – Guest Star
- Copper (2013) – Recurring Role
- Reign (2013) – Lord Julien
- Murdoch Mysteries (2013–2014, 2023) – Leslie Garland
- Selfie (2014) – Freddy
- The Secret Life of Marilyn Monroe (2015) – Supporting Role
- Grey’s Anatomy (2015–2021) – Dr. Andrew DeLuca
- Race (2016) – Supporting Role
- Acquainted (2018) – Lead Role, Executive Producer
- Station 19 (2019, 2021) – Dr. Andrew DeLuca
- Luca (2021) – Giacomo (Voice)
- Diabolik: Ginko Attacks! (2022) – Diabolik
- Diabolik: Who Are You? (2023) – Diabolik
- Inganno (Deceitful Love) (2023) – Elia
Net Worth
Giacomo Gianniotti’s estimated net worth ranges between $1 million and USD 2 million. His primary income sources include his acting roles, notably his six-year stint on Grey’s Anatomy and his starring roles in the Diabolik films. Additional earnings come from producing Acquainted, voice work in Luca, and brand endorsements via his social media presence.
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