| Category | Details |
|---|
| Full Name | Jay Scott Greenspan, professionally known as Jason Alexander |
| Date of Birth | 23 September 1959 |
| Height | 5 feet 5 inches (165 cm) |
| Net Worth | Estimated $50 million. This is a published estimate, not a figure confirmed by Alexander. |
| Age (2026) | 67 years old |
| Birthplace | Newark, New Jersey, United States |
| Nationality | American |
| Profession | Actor, comedian, director, producer, singer, voice actor and television presenter |
| Famous For | Playing George Costanza in the NBC sitcom Seinfeld |
| Nickname | Jason; Jay |
| Zodiac Sign | Libra |
| Religion | Has not made a definitive public statement about his personal religious beliefs |
| Ethnicity | Jewish-American family background |
| Father | Alexander B. Greenspan |
| Mother | Ruth Minnie Simon |
| Siblings | He has two siblings, including a sister named Karen. |
| Wife | Daena E. Title, an artist and former actress |
| Marriage Date | 31 May 1982 |
| Marital Status | Married |
| Children | Two sons, Gabe Greenspan and Noah Greenspan |
| Grandchildren | He became a grandfather when his son Gabe welcomed a child in 2022. |
| Education | Attended Livingston High School in New Jersey and studied theatre at Boston University. |
| University | Boston University; he left before completing his degree and later received an honorary degree. |
| Early Interests | Initially wanted to become a magician before developing a stronger interest in theatre and acting. |
| Career Beginning | Started his professional entertainment career in the early 1980s, performing in theatre and pursuing television and film opportunities. |
| Acting Debut | Appeared in early television and film projects before achieving widespread recognition. |
| Broadway Breakthrough | Earned major recognition for his performance in Jerome Robbins’ Broadway. |
| Tony Award | Won the 1989 Tony Award for Best Featured Actor in a Musical for Jerome Robbins’ Broadway. |
| Television Breakthrough | His casting as George Costanza in Seinfeld in 1989 transformed his career. |
| Most Famous Character | George Costanza, the anxious, unpredictable and frequently self-sabotaging friend of Jerry Seinfeld. |
| Seinfeld Run | Appeared in all nine seasons of Seinfeld, which ran from 1989 to 1998. |
| Seinfeld Awards | Received seven consecutive Primetime Emmy nominations for his performance as George Costanza and four Golden Globe nominations. |
| Screen Actors Guild Award | Won Screen Actors Guild recognition as part of the Seinfeld ensemble. |
| Film Debut and Early Roles | Built his screen career through films and television appearances before becoming a household name. |
| Pretty Woman | Played Philip Stuckey, the antagonistic lawyer, in the 1990 romantic comedy Pretty Woman. |
| Other Notable Films | Jacob’s Ladder, The Paper, Dunston Checks In, Love! Valour! Compassion!, Shallow Hal and Hachi: A Dog’s Tale. |
| Animated Film Work | Voiced Hugo the gargoyle in Disney’s The Hunchback of Notre Dame (1996). |
| Voice Acting | Has lent his voice to animated productions including Duckman, The Simpsons, Family Guy and American Dad!. |
| Television Projects | Appeared in Bob Patterson, Listen Up, Curb Your Enthusiasm, Monk, Two and a Half Men and The Marvelous Mrs. Maisel. |
| Recent Film Appearance | Played Ted in the 2025 Netflix science-fiction film The Electric State. |
| Directing Career | Has directed television episodes, including an episode of Seinfeld, and has worked behind the camera on other projects. |
| Theatre Career | Continued performing on stage after his television success, appearing in productions including The Producers and The Music Man. |
| Singing Career | Has demonstrated his musical abilities through Broadway performances, stage productions and other entertainment projects. |
| Writing and Producing | Has taken on creative roles beyond acting, including television production and directing. |
| Poker Interest | Has participated in celebrity poker events and charity tournaments, using his public profile to support charitable causes. |
| Seinfeld Salary | His reported salary rose significantly during the sitcom’s later seasons, reaching approximately $600,000 per episode for the final season. |
| Career Earnings | His income has come from television and film roles, Broadway performances, voice acting, directing and residual payments. |
| Seinfeld Residuals | He receives acting-related residual payments from reruns, but did not receive the same major syndication ownership share as the show’s creators. |
| Business Activities | His professional work has primarily centred on entertainment, theatre, directing and charitable projects. |
| Charity Work | Has supported charitable fundraising, arts education and social causes, including celebrity poker events benefiting nonprofit organisations. |
| Personality and Public Image | Known for expressive comic performances, sharp timing and a public personality that is often more relaxed than his famous television character. |
| Hair Colour | Grey, although his appearance has changed over the years. |
| Eye Colour | Brown |
| Instagram | Public account: @jasonalexander |
| X (Twitter) | @IJasonAlexander |
| Facebook | Jason Alexander |
| Official Website | No consistently confirmed official personal website is listed here. |
| Career Status | Continues to be recognised for his television, film, theatre and voice performances. |
