| Detail | Information |
|---|---|
| Full Name | Thomas Boone Quaid |
| Born | November 8, 2007 |
| Birthplace | Santa Monica, California, USA |
| Age | 18 years old in 2026 |
| Nationality | American |
| Profession | Student |
| Father | Dennis Quaid |
| Mother | Kimberly Buffington |
| Twin Sister | Zoe Grace Quaid |
| Older Half-Brother | Jack Quaid |
| College | University of Colorado Boulder |
| Known For | Being Dennis Quaid’s son and Jack Quaid’s younger half-brother |
Thomas Boone Quaid is the son of American actor Dennis Quaid and his former wife, Kimberly Buffington. Born in 2007, Thomas is the fraternal twin brother of Zoe Grace Quaid and the younger half-brother of actor Jack Quaid.
Although Thomas was born into a well-known Hollywood family, he has largely stayed away from the entertainment industry. His father has enjoyed a long career in film and television, while his older half-brother Jack followed Dennis and his mother, actress Meg Ryan, into acting.
Thomas and Zoe became widely known during infancy after experiencing a serious medical emergency at Cedars-Sinai Medical Center. The twins were accidentally given an extremely high dose of the blood thinner Heparin. Both eventually recovered, and the incident influenced Dennis Quaid’s later work on patient safety.
Now an adult, Thomas has begun a new chapter at college while continuing to maintain a relatively private life.
Thomas Boone Quaid’s Early Life
Thomas Boone Quaid was born on November 8, 2007, in Santa Monica, California. He was born two minutes before his twin sister, Zoe Grace. According to PEOPLE, Thomas weighed 6 pounds, 12 ounces at birth, while Zoe weighed 5 pounds, 9 ounces.
Thomas was born through a gestational carrier to Dennis Quaid and Kimberly Buffington. The couple had married in 2004 and later welcomed their twins three years later.
Thomas grew up with his twin sister and had a much older half-brother, Jack Quaid. Jack was born in 1992 to Dennis Quaid and actress Meg Ryan.
While Jack eventually became a successful actor, Thomas has followed a much quieter path. He has not pursued a public entertainment career and has generally remained outside the Hollywood spotlight.
Thomas Boone Quaid and His Twin Sister Zoe
Zoe Grace Quaid is Thomas’s fraternal twin sister. The twins were born on the same day in 2007 and have grown up together as the youngest children of Dennis Quaid.
Their father has occasionally discussed his relationship with the twins in interviews. In 2026, Dennis revealed that both Thomas and Zoe had graduated from high school and moved on to college.
Thomas attends the University of Colorado Boulder, while Zoe attends the University of Virginia. Dennis said that sending the twins to college was an emotional experience because they were beginning independent lives away from home.
Both twins are reportedly studying business, according to PEOPLE’s September 2026 report.
Thomas Boone Quaid’s Medical Emergency
One of the most important events in Thomas’s early life happened only weeks after his birth.
Thomas and Zoe were hospitalized at Cedars-Sinai Medical Center after developing staph infections. During their treatment, hospital staff accidentally administered approximately 1,000 times the recommended dose of Heparin, a blood-thinning medication.
The medication error placed both newborns in serious danger. Their parents were informed of the overdose after it had already occurred, and the babies required intensive medical care.
Fortunately, both Thomas and Zoe survived the incident and made a full recovery. They were discharged from the hospital in early December 2007.
The experience became an important part of the Quaid family’s story and later influenced Dennis Quaid’s work on medical safety.
The Quaid Foundation
Following the medical emergency involving his children, Dennis Quaid became an advocate for preventing medical errors.
He established The Quaid Foundation, which focused on raising awareness about medication mistakes and improving patient safety. The foundation grew from the family’s experience and gave Dennis an opportunity to speak publicly about the importance of safer medical practices.
Thomas himself has generally remained private and has not taken on the same public advocacy role as his father.
Thomas Boone Quaid’s Parents
Thomas is the son of actor Dennis Quaid and Kimberly Buffington.
Dennis Quaid is a veteran actor whose career has included movies such as The Parent Trap, The Rookie, The Day After Tomorrow, and Vantage Point. He has also worked extensively in television and documentary projects.
Kimberly Buffington was Dennis Quaid’s third wife. The couple married in 2004 and welcomed Thomas and Zoe in 2007.
Dennis and Kimberly later divorced, with their divorce finalized in 2018. Thomas and Zoe remained their two children together.
Thomas Boone Quaid and Jack Quaid
Thomas has an older half-brother, Jack Quaid, who is also a well-known actor.
Jack was born in 1992 to Dennis Quaid and actress Meg Ryan. He later established his own acting career with roles in The Hunger Games, Scream, and the television series The Boys.
The age difference between the brothers is significant. Jack was already an adult when Thomas and Zoe were born.
Unlike Jack, Thomas has not entered Hollywood. There is no established acting career associated with him, and he has chosen to keep much of his personal life private.
Thomas Boone Quaid’s Education
Thomas has kept his educational life mostly private, but his college plans became public in 2026.
After graduating from high school, Thomas enrolled at the University of Colorado Boulder. His twin sister Zoe chose the University of Virginia. Their father confirmed the college information while discussing the experience of becoming an empty-nester.
According to PEOPLE, both twins are studying business.
Their move to college represents an important step into adulthood after growing up in a famous family.
Thomas Boone Quaid’s Private Life
Thomas Boone Quaid has maintained a low public profile throughout his life.
His father is a recognizable Hollywood actor, and his half-brother is also a successful performer, but Thomas has not sought similar attention.
There are relatively few verified public details about his friendships, relationships, interests, or future professional plans. This limited information appears consistent with his decision to live away from the entertainment spotlight.
As he begins college, Thomas’s future career remains unknown.
Dennis Quaid’s Family Life
Thomas is one of three children of Dennis Quaid.
Dennis’s oldest child is Jack Quaid, whom he shares with Meg Ryan. His younger children are twins Thomas and Zoe, whom he shares with Kimberly Buffington.
Dennis has spoken positively about fatherhood over the years and has expressed pride in all three of his children.
In 2026, he discussed the emotional experience of sending Thomas and Zoe to college. He said he missed the twins after they moved away and compared the experience with the earlier moment when he sent Jack to college.
The family has therefore entered a new stage, with all three children now adults.
Thomas Boone Quaid’s Career
Thomas Boone Quaid does not currently have a publicly established entertainment career.
Unlike his father and older half-brother, he has not appeared to pursue acting as a profession. His current focus is college, where he is studying business at the University of Colorado Boulder.
Because Thomas is only 18, his long-term career plans may develop over the coming years. For now, there is no reliable public information confirming what profession he intends to pursue after college.
Thomas Boone Quaid’s Net Worth
Thomas Boone Quaid’s personal net worth is not publicly known.
Some websites may publish estimated figures for celebrity family members, but these numbers are generally not supported by reliable financial records.
Thomas has not established a public entertainment career, so there is no dependable basis for assigning him a specific net-worth figure.
His father’s financial success as a longtime actor should also not be confused with Thomas’s personal assets or income.
Thomas Boone Quaid on Social Media
Thomas has maintained a relatively private online presence.
Unlike many celebrity children, he has not developed a major public social-media profile. Accounts using his name should therefore not automatically be considered official.
His limited public presence is consistent with his broader approach to life away from Hollywood attention.
What Is Thomas Boone Quaid Doing Now?
As of 2026, Thomas is attending the University of Colorado Boulder. His father recently confirmed that Thomas and Zoe had moved away to college and were beginning their independent lives.
Thomas is reportedly studying business, while his sister Zoe is studying at the University of Virginia.
Beyond his education, Thomas has kept his plans private. There is currently no verified information about a specific career he intends to pursue after college.
Final Thoughts
Thomas Boone Quaid has grown up in one of Hollywood’s recognizable families while choosing a life far removed from the entertainment industry.
Born in 2007 to Dennis Quaid and Kimberly Buffington, Thomas is the fraternal twin brother of Zoe Grace and the younger half-brother of actor Jack Quaid.
His early life included a serious medical emergency when he and Zoe were accidentally given a very high dose of Heparin. Both children recovered, and the incident later influenced Dennis Quaid’s patient-safety advocacy.
In 2026, Thomas graduated from high school and began attending the University of Colorado Boulder, where he is studying business.
While his father and half-brother have careers in the public eye, Thomas has chosen a more private path. His future career and personal plans remain largely unknown.
FAQs About Thomas Boone Quaid
Who is Thomas Boone Quaid?
Thomas Boone Quaid is the son of actor Dennis Quaid and his former wife, Kimberly Buffington. He is also the twin brother of Zoe Grace Quaid and the younger half-brother of actor Jack Quaid.
When was Thomas Boone Quaid born?
Thomas was born on November 8, 2007, in Santa Monica, California. He was born two minutes before his twin sister, Zoe.
What happened to Thomas Boone Quaid as a baby?
Thomas and Zoe were accidentally given about 1,000 times the recommended dose of Heparin while being treated at Cedars-Sinai Medical Center. Both twins survived and made a full recovery.
Where does Thomas Boone Quaid go to college?
Thomas attends the University of Colorado Boulder. His father confirmed this in 2026 while discussing the twins’ move to college.
Is Thomas Boone Quaid an actor?
There is no publicly established acting career for Thomas. Unlike his father Dennis and half-brother Jack, he has remained outside the entertainment industry.
Main Sources Checked
- PEOPLE — Background on Dennis Quaid’s children, including Thomas’s birth, twin sister, medical emergency, and family history.
- PEOPLE, September 2026 — Current information about Thomas attending the University of Colorado Boulder and his father’s comments about the twins starting college.
- Biography.com — Background on Dennis Quaid’s marriages and children.
