Cosmo Jost

Cosmo Jost is an American private citizen born to Academy Award-nominated actress Scarlett Johansson and Saturday Night Live head writer Colin Jost. As the first child of this high-profile couple, he has lived his entire life under intense media scrutiny yet remains fiercely protected from the public eye. His profession is officially listed as family member since he has never pursued a career in entertainment.

Born on August 18, 2021, Cosmo is currently five years old and resides in New York with his parents and older half-sister Rose Dorothy Dauriac. Unlike many celebrity children who appear on red carpets or social media, Cosmo has no professional filmography, no acting credits, and no public appearances. His parents have maintained a strict policy of privacy, refusing to release clear photographs of him despite the global fascination with their family. [edit]

The story of Cosmo Jost begins with the union of two major entertainment figures. Scarlett Johansson and Colin Jost began dating in 2017 after meeting on the set of Black Widow. Their relationship moved quickly toward marriage, culminating in a private wedding ceremony at their Brooklyn home on October 10, 2020. Just ten months later, the couple welcomed their first child together.

Cosmo entered the world on August 18, 2021, around 4:00 PM in New York City. The birth was confirmed by Colin Jost via an Instagram post that garnered over 250,000 likes within hours. While the post celebrated the arrival of the baby, it carefully obscured the infant's face to maintain anonymity. Before any public attention could focus on him, his parents established a boundary that would define his early years: total privacy. He grew up in a household where his mother was one of the highest-paid actresses in Hollywood and his father was a beloved comedy anchor, yet he was treated as a normal child shielded from the industry spotlight. [edit]

As of 2026, Cosmo Jost has not started a professional career. He holds no IMDb credits, has not released any music, and has not appeared in any films or television productions. His existence outside the family unit remains entirely separate from the public sphere of entertainment. Any mentions of him in news outlets or magazines are strictly limited to his status as the son of Scarlett Johansson and Colin Jost.

While other children of celebrities often begin modeling or acting at a young age, Cosmo's parents have consistently declined to participate in such opportunities. In April 2024, a rare image surfaced showing Cosmo mimicking his father's mannerisms, but even this glimpse was heavily cropped or obscured to protect his identity. There are no business ventures, endorsements, or brand partnerships associated with him. His only role in the public narrative is that of a protected minor whose life is managed entirely by his guardians. [edit]

Cosmo Jost is viewed by the public as the ultimate protected child. Media portrayals focus on his parents' efforts to give him a normal upbringing despite their immense wealth and fame. He is not seen as a celebrity in his own right but rather as a symbol of parental dedication to privacy. The narrative surrounding him is one of innocence and shielding, contrasting sharply with the highly publicized careers of his mother and father.

There is no distinct aesthetic or persona associated with him because he has no public presence. The few times he is mentioned in articles, the tone is protective and respectful of his anonymity. Fans and observers generally accept his parents' decision to keep him out of the limelight, viewing his lack of public exposure as a deliberate choice rather than an oversight. His image is defined by what is not shown rather than what is displayed. [edit]

iFANN has not yet collected fame data for this person. As a minor with no professional career, Cosmo does not hold a ranking in the Global Fame Rankings or any other iFANN evaluation metrics. The engine evaluates public signals such as Wikipedia readership and search interest, but these do not currently register significant volume for a private child.

There is no formal fandom dedicated to Cosmo Jost. While fans of Scarlett Johansson and Colin Jost frequently discuss him in forums and comment sections, there is no organized fanbase, campaign, or specific group that claims him as a subject. Discussions about him usually revolve around his parents' work or the occasional update on his privacy. The audience interested in Cosmo is incidental rather than intentional, consisting mostly of people following the Johansson-Jost family saga rather than supporters of Cosmo himself. [edit]

The name Cosmo carries specific cultural weight for his father. Colin Jost has stated that the choice was partly a nod to Cosmo Kramer, the eccentric character from Seinfeld, whom he admires. However, the primary reason was simply that he and Scarlett liked the sound of the name. This decision sparked a well-documented family drama when Colin's mother, Nancy Jost, expressed confusion. She had expected the more traditional Italian spelling "Cosimo" and found the shortened version unusual.

Another notable aspect of his early life involves the reaction to his birth announcement. When Colin posted the news on Instagram in August 2021, the post received massive engagement, highlighting the public's curiosity about the couple's first child. Despite this interest, no official photo of Cosmo has ever been released by the family. Paparazzi attempts to capture his image have largely failed or resulted in blurred photos that the family does not acknowledge. The naming controversy also resurfaced in late 2025 when Scarlett discussed the criticism she received from extended family regarding the unique spelling. [edit]

Cosmo lives primarily in New York with his parents and his older half-sister, Rose Dorothy Dauriac. Rose was born in 2017 to Scarlett and her ex-husband Romain Dauriac, making Cosmo her half-brother. The siblings grow up in the same household under the care of both mothers and fathers, though details of their daily interactions remain private. Scarlett and Colin married in 2020, creating a blended family dynamic that has remained stable since Cosmo's birth.

His extended family includes his grandmother Nancy Jost, who famously struggled with the name choice, and his grandfather John Jost. On his mother's side, he has connections to the extensive Johansson lineage, which includes Swedish, Danish, Irish, English, and German heritage. Despite the fame of his relatives, Cosmo's immediate family circle is tightly controlled. His parents have successfully kept him away from the public events and red carpet appearances that often draw celebrity children into the spotlight. [edit]

Scarlett Johansson (Mother), Colin Jost (Father), Rose Dorothy Dauriac (Half-Sister), Romain Dauriac (Ex-Stepfather), Nancy Jost (Grandmother). [edit]

Cosmo Jost has no dating history as he is a five-year-old child. All romantic relationships associated with his name involve his parents. His mother, Scarlett Johansson, was previously married to Ryan Reynolds and later to Romain Dauriac, with whom she had her first daughter, Rose Dorothy Dauriac, in 2017. Scarlett and Colin Jost began dating in 2017 and married in October 2020, leading to Cosmo's birth the following year.

Colin Jost was previously engaged to Michaela Watkins from 2015 to 2017 before his relationship with Scarlett began. These past relationships ended without producing children for Colin. Cosmo is the only child of Scarlett and Colin, serving as the link between his parents' respective previous families. There are no other known partners or romantic interests involving Cosmo himself, as he remains underage and focused on a private childhood. [edit]

As a minor dependent living with his parents, Cosmo Jost has no independent net worth. Financial estimates for him are speculative and generally reported as negligible or zero, as he owns no assets, businesses, or investments of his own. His financial status is entirely tied to the family estate and the combined wealth of Scarlett Johansson and Colin Jost.

Research by the iFANN Editorial Team indicates that while Cosmo may benefit from trust funds or inheritance rights established by his parents, he generates no active income streams. Sources like Celebrity Net Worth list his personal value at $0 due to his lack of earnings. Forbes does not include him in their child celebrity lists because he has no commercial activity. His economic reality is that of a child supported by a wealthy family rather than an individual accumulating personal wealth. [edit]