Julian Kal Seinfeld is the middle child of comedian Jerry Seinfeld and author and philanthropist Jessica Seinfeld. Although his father is one of the best-known names in American comedy, Julian has built a much quieter public identity centered on education, sports, business, branding, and professional interests rather than acting or stand-up comedy. He was born on March 1, 2003, and is 23 years old in 2026.
Interest in Julian has grown as the Seinfeld children have reached adulthood. He graduated from Duke University in 2025 after studying sociology, completed research connected to NBA player evaluation, and has gained experience in sports-related business. More recent public professional information also connects him with branding at Paris-based L’Art De L’Automobile.
This biography focuses on information that can be supported by reliable public sources. Details about Julian Kal Seinfeld’s relationships, finances, and private life are limited, so rumors and unsupported estimates should not be treated as facts.
Julian Kal Seinfeld at a Glance
| Detail | Information |
| Full name | Julian Kal Seinfeld |
| Known for | Son of Jerry and Jessica Seinfeld; Duke graduate |
| Date of birth | March 1, 2003 |
| Age in 2026 | 23 |
| Birthplace | New York City, as commonly reported |
| Nationality | American |
| Father | Jerry Seinfeld |
| Mother | Jessica Seinfeld |
| Siblings | Sascha Betty Seinfeld and Shepherd Kellen Seinfeld |
| Education | Ethical Culture Fieldston School; Duke University |
| Field of study | Sociology |
| Career interests | Branding, sports management, business and media |
| Current public career information | Branding at L’Art De L’Automobile |
| Relationship status | No marriage or relationship publicly confirmed by reliable sources reviewed |
| Net worth | Not publicly verified |
Julian’s March 1, 2003 birth date, his position as the middle child, and his education at Ethical Culture Fieldston School and Duke University have been documented by PEOPLE and other established publications.
Early Life and Childhood
Julian Kal Seinfeld grew up as one of three children in the Seinfeld family. His older sister, Sascha, was born in 2000, while his younger brother, Shepherd, was born in 2005. Because Jerry Seinfeld was already internationally famous by the time Julian was born, he grew up around a level of public attention that most children do not experience. Still, Jerry and Jessica generally kept their children’s everyday lives away from constant media coverage.
Jessica has spoken publicly about how parenting responsibilities developed within the family. She has said Jerry became particularly patient and effective as a father as their children grew older. Jerry has also described the importance of trying to set a positive example rather than simply telling his children how to behave. These comments suggest that family life, responsibility, and independence were important themes in the Seinfeld household.
Julian occasionally appeared with his family at charitable events and other public occasions. For example, he joined his parents and siblings at a GOOD+ Foundation event in New York City in 2017.
Julian Kal Seinfeld’s Age, Birthday and Background
Julian Kal Seinfeld was born on March 1, 2003. That makes him 23 years old as of August 2026. He is Jerry and Jessica Seinfeld’s second child and their first son. PEOPLE’s updated family profile also lists Julian as 23 in 2026.
He is widely reported to have been born in New York City, where much of the family’s life has been based. Public coverage of Julian, however, has generally focused far more on his education and family than on detailed information about his birth or childhood.
Parents: Jerry Seinfeld and Jessica Seinfeld
Julian’s father, Jerry Seinfeld, is the comedian, writer and actor best known for co-creating and starring in the television sitcom Seinfeld. His mother, Jessica Seinfeld, is an author and philanthropist associated with the GOOD+ Foundation. Jerry and Jessica married in December 1999 and later became parents to Sascha, Julian and Shepherd.
Despite Jerry’s fame, Julian does not appear to have been pushed toward comedy. Public comments from his parents have instead emphasized education, work ethic and character. When Julian turned 20 in 2023, Jessica praised his ability to manage a demanding college schedule alongside work that interested him.
That distinction is important when discussing Julian Kal Seinfeld. His father’s career explains why the public first knew his name, but Julian’s own academic and professional interests have developed in a different direction.
Julian Kal Seinfeld’s Siblings and Family Life
Julian has two siblings: Sascha Betty Seinfeld and Shepherd Kellen Seinfeld. Sascha is the eldest and was born on November 7, 2000. She graduated from Duke University in 2023 and has received writing credits connected with Amy Schumer’s television work.
Shepherd, the youngest sibling, was born on August 22, 2005. He also enrolled at Duke, with Jerry and Jessica helping him move into college in August 2024. That meant all three Seinfeld children had attended Duke University.
The siblings are periodically seen together at important family events. All three joined their parents at the Los Angeles premiere of Jerry’s film Unfrosted in April 2024, and the entire family reunited for Julian’s Duke graduation the following year.
Education and College Years
Julian attended Ethical Culture Fieldston School, an independent school in New York, and graduated in May 2021. Jessica publicly celebrated his graduation and thanked the school community for helping students through the difficult pandemic-era academic period.
Later in 2021, Julian began studying at Duke University. He majored in sociology, an academic choice that became particularly relevant during his senior year. Duke’s Sociology Department reported that he completed an independent study examining how NBA players are evaluated by agents and administrators and whether early assessments accurately predict long-term success.
His project used data from 120 NBA players drafted between 2021 and 2024. He examined factors such as draft position, college performance, agency representation and later career measures. Duke reported that the project combined Julian’s academic work with his long-standing interest in basketball.
He was also inducted into Duke’s chapter of Alpha Kappa Delta, the international sociology honor society, in 2025.
Julian graduated from Duke University in May 2025. Jerry, Jessica, Sascha and Shepherd all attended the graduation celebration in North Carolina.
Career, Internships and Professional Interests
Julian Kal Seinfeld appears to have chosen a professional path outside traditional entertainment. During college, public reporting based on his LinkedIn profile identified him as an intern with Thirty Five Ventures, also known as 35V.
His academic work also points toward sports business. In Duke’s 2025 profile, Julian said his long-term interest was working in sports management, and he described his NBA research project as something he hoped could be useful in a future professional role.
More recent public professional information shows another area of interest. Julian’s LinkedIn headline currently describes him as working in branding at L’Art De L’Automobile, a Paris-based company operating at the intersection of automobile culture and fashion. The company’s LinkedIn presence also identifies Julian among people associated with the business.
Together, these experiences suggest interests spanning sports, branding, fashion, automotive culture, media and business rather than a direct move into his father’s comedy career.
Julian Kal Seinfeld and Thirty Five Ventures
Thirty Five Ventures is a media and investment company founded by basketball star Kevin Durant and business partner Rich Kleiman. Its work includes investments, media, marketing and business ventures connected with sports and culture.
Earlier public profiles of Julian identified him as an intern there while he was attending Duke. A public LinkedIn post also connected his account with 35 Ventures and Boardroom, the company’s sports-business media brand.
This experience fits naturally with Julian’s later academic research into NBA talent evaluation and his stated interest in sports management.
Life Outside His Famous Family Name
Although Julian sometimes appears beside his famous parents, he is not a conventional celebrity. He has not built a major acting career, released a public comedy project, or pursued a highly visible entertainment persona.
Instead, much of the reliable information about him comes from education, professional profiles and occasional family appearances. His attendance at the Unfrosted premiere in 2024 and Duke graduation in 2025 are examples of public moments connected to family milestones rather than efforts to become a full-time public figure.
This relatively low-key approach helps explain why many details commonly found in celebrity biographies simply are not publicly available.
Relationship Status and Personal Life
There is no reliable public confirmation that Julian Kal Seinfeld is married as of 2026. Major recent profiles discussing his life focus on his family, education and career and do not identify a wife or confirmed partner. Searches may produce websites claiming to know his girlfriend or dating history, but such claims should not be treated as established facts without credible sourcing.
Julian appears to keep this part of his life largely private. For that reason, describing him as definitely single would also go beyond what is publicly confirmed.
Julian Kal Seinfeld’s Net Worth
Julian Kal Seinfeld’s personal net worth has not been publicly verified by a reliable financial source. There is also not enough trustworthy public information about his income, investments, property or ownership interests to produce a responsible estimate.
Some celebrity websites may attach specific dollar figures to Julian because Jerry Seinfeld is wealthy. That approach can be misleading. A parent’s wealth is not automatically a child’s personal net worth, and Julian’s individual finances should be treated separately.
For an accurate biography, the safest description is therefore “net worth not publicly verified” rather than presenting an unsupported estimate as fact.
Social Media and Public Presence
Julian has used Instagram under the handle @julianseinfeld, and the account has been referenced by established entertainment publications. He also has a public-facing LinkedIn presence that provides more useful information about his education and professional direction.
Compared with many children of major celebrities, however, his overall public presence remains limited. Much of what appears in mainstream coverage comes through family photographs shared by Jessica Seinfeld or through professional and university sources.
What Julian Kal Seinfeld Is Doing Now?
As of 2026, Julian is a recent Duke University graduate whose public career information points toward branding and business. His LinkedIn headline identifies him with L’Art De L’Automobile, while his earlier work with 35V/Boardroom and Duke research show a strong connection to sports management and sports business.
It is too early to say whether branding, sports management or another business field will become his long-term career. What can be said confidently is that his professional path so far has developed outside his father’s traditional comedy and acting work.
Lesser-Known Facts About Julian Kal Seinfeld
One notable fact about Julian is how closely his academic work connected with his personal interest in basketball. His Duke research was not simply a general sociology assignment; it analyzed real NBA draft outcomes and considered how organizations judge future player value.
Another interesting family detail is the Seinfeld children’s strong connection with Duke. Sascha graduated from the university in 2023, Julian followed in 2025, and Shepherd began attending after his 2024 high school graduation.
Julian also celebrated his bar mitzvah with a large family gathering that Jessica humorously called “Jew-Chella,” a detail she later discussed with PEOPLE.
Julian Kal Seinfeld Compared With His Siblings
| Sibling | Birth Year | Position in Family | Education/Public Direction |
| Sascha Seinfeld | 2000 | Oldest | Duke graduate; has writing credits |
| Julian Kal Seinfeld | 2003 | Middle | Duke sociology graduate; branding and sports-business interests |
| Shepherd Kellen Seinfeld | 2005 | Youngest | Duke student |
The three siblings share a well-known family name but have developed different levels of public visibility and different interests.
Conclusion
Julian Kal Seinfeld may be best known as Jerry and Jessica Seinfeld’s son, but his own background shows a developing identity centered on education, sports, research and business. Born on March 1, 2003, he grew up alongside siblings Sascha and Shepherd, attended Ethical Culture Fieldston School, and later earned his degree from Duke University in 2025.
His NBA-focused sociology research, earlier experience with 35V/Boardroom, interest in sports management and more recent branding work offer a clearer picture of his professional direction.
At the same time, Julian continues to keep much of his personal life away from public attention. Claims about his relationships or personal wealth should therefore be treated carefully unless reliable evidence becomes available. For now, the verified record presents Julian Kal Seinfeld as a young Duke graduate building a career separate from, even if inevitably connected to, one of comedy’s most famous family names.
FAQs
Who is Julian Kal Seinfeld?
Julian Kal Seinfeld is the son of comedian Jerry Seinfeld and author and philanthropist Jessica Seinfeld. He is their middle child and first son.
How old is Julian Kal Seinfeld in 2026?
He is 23 years old in 2026.
When was Julian Kal Seinfeld born?
He was born on March 1, 2003.
Who are Julian Kal Seinfeld’s parents?
His parents are Jerry Seinfeld and Jessica Seinfeld.
Who are Julian Kal Seinfeld’s siblings?
He has an older sister, Sascha Betty Seinfeld, and a younger brother, Shepherd Kellen Seinfeld.
Where did Julian Kal Seinfeld go to college?
Julian attended Duke University and graduated in May 2025.
Did Julian Kal Seinfeld attend Duke University?
Yes. He studied sociology at Duke and completed an independent research project during his senior year.
What did Julian Kal Seinfeld study?
He majored in sociology.
What does Julian Kal Seinfeld do for a living?
His current public LinkedIn headline lists him in branding at L’Art De L’Automobile. Earlier in his career, he gained experience with 35V/Boardroom and expressed an interest in sports management.
Is Julian Kal Seinfeld married?
No marriage has been publicly confirmed by reliable sources reviewed for this article.
Does Julian Kal Seinfeld have a girlfriend?
There is no widely reported, reliably confirmed current girlfriend or partner. His dating life appears to remain private.
What is Julian Kal Seinfeld’s net worth?
His personal net worth is not publicly verified, and there is not enough reliable financial information to provide a responsible estimate.
Is Julian Kal Seinfeld on Instagram?
Public reporting has identified his Instagram account as @julianseinfeld.
What is Julian Kal Seinfeld doing now?
In 2026, he is a recent Duke graduate whose publicly visible professional interests include branding, sports management and business. His current LinkedIn headline connects him with L’Art De L’Automobile.
