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Thomas Boone Quaid is the son of actor Dennis Quaid and Kimberly Buffington. Born on November 8, 2007, in Santa Monica, California, he is the twin brother of Zoe Grace Quaid and the younger half-brother of actor Jack Quaid. Thomas has largely lived privately and, in 2026, completed high school and reportedly planned to attend the University of Colorado Boulder.

Bio Table

Field	Verified Information
Full Name	Thomas Boone Quaid
Known For	Dennis Quaid’s son; Zoe Grace Quaid’s twin
Nationality	American
Birth Date	November 8, 2007
Birthplace	Santa Monica, California
Father	Dennis Quaid
Mother	Kimberly Buffington
Twin Sister	Zoe Grace Quaid
Older Half-Brother	Jack Quaid
Birth Arrangement	Gestational carrier
Education	Graduated high school in 2026; University of Colorado Boulder reported as his next academic destination

Who Is Thomas Boone Quaid?

Thomas Boone Quaid has spent most of his life with a famous surname but without a celebrity career of his own. He is the youngest son of actor Dennis Quaid and his former wife Kimberly Buffington, and he has a twin sister, Zoe Grace Quaid. He is also the younger half-brother of actor Jack Quaid, Dennis Quaid’s son with actress Meg Ryan.

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Born in 2007, Thomas became publicly known almost immediately because of a serious medical incident involving him and Zoe as newborns. Their experience later became part of Dennis Quaid’s advocacy for medication safety. Beyond that early episode, however, the family has generally kept Thomas’s personal life out of the spotlight.

Recent reporting gives the clearest update on Thomas Boone Quaid in 2026: he is now 18, has completed high school, and has been reported as planning to attend the University of Colorado Boulder.

Thomas Boone Quaid’s Birth and Early Family Life

Thomas was born on November 8, 2007, in Santa Monica, California. His twin sister, Zoe Grace, was born the same day. Dennis and Kimberly Quaid had the children through a gestational carrier, making Thomas and Zoe the couple’s biological children.

The twins were born about four weeks prematurely but were initially described as healthy. Their arrival expanded Dennis Quaid’s family more than a decade after the birth of his first child, Jack Quaid, who was born in 1992 during Dennis’s marriage to Meg Ryan.

Thomas and Zoe grew up in a family closely connected to Hollywood, but their lives have been considerably more private than those of Dennis and Jack. Dennis has occasionally spoken about his children, while detailed information about Thomas’s schooling, personal interests, friendships, and everyday life has generally remained unavailable publicly.

The Medical Emergency That Made Thomas Known

One of the most important chapters in Thomas Boone Quaid’s biography occurred when he was only 12 days old.

In November 2007, Thomas and Zoe were taken to Cedars-Sinai Medical Center in Los Angeles after developing staph infections. While being treated, the newborn twins received an extremely large dose of the blood thinner heparin because of a medication error. Testimony later given by Dennis and Kimberly Quaid before Congress stated that the babies were mistakenly given 10,000 units instead of the intended 10 units.

The incident was potentially fatal, but both infants recovered. The case subsequently became a major part of Dennis Quaid’s public discussion of medication safety and medical errors. The Illinois Appellate Court later documented the parents’ lawsuit involving Baxter Healthcare and identified Thomas and Zoe as the children involved in the case.

It is important to distinguish Thomas’s role from that of his father. Thomas was an infant and did not personally become an advocate or campaigner. Rather, what happened to him and his twin contributed to the family’s public advocacy and legal efforts surrounding patient safety.

Thomas Boone Quaid and Jack Quaid

A frequent search question is about Thomas Boone Quaid and Jack Quaid. The two are brothers through their father, Dennis Quaid, but they have different mothers.

Jack was born to Dennis Quaid and Meg Ryan in 1992. Thomas was born 15 years later to Dennis and Kimberly Buffington. That makes Jack Thomas’s older half-brother.

Their public lives are notably different. Jack chose acting and established himself independently in Hollywood, with roles in productions including The Hunger Games, The Boys, Scream, and Oppenheimer. Thomas, by contrast, has no publicly established professional acting career.

The contrast has fueled interest in whether Thomas will eventually enter the entertainment business. There is currently no reliable evidence that he has done so.

Is Thomas Boone Quaid in Movies?

Searches for Thomas Boone Quaid movies can be misleading because his father and half-brother have extensive filmographies.

There are no reliable, publicly established professional film or television credits for Thomas. His father, Dennis Quaid, has spent decades working in film and television, while Jack Quaid has built his own acting career. Thomas has not publicly followed the same path.

That distinction matters because being born into an acting family does not automatically mean a person intends to become an actor. As of 2026, the most recent credible reports point toward Thomas continuing his education rather than beginning a Hollywood career.

Thomas Boone Quaid and Twin Sister Zoe Grace

Thomas’s twin sister is Zoe Grace Quaid. The twins were born on the same day in 2007 and shared the serious medical emergency during their infancy.

Over the years, Dennis Quaid has occasionally provided glimpses into their childhood. In a 2012 interview, he described Thomas and Zoe as developing different personalities as they grew older.

Their lives have remained mostly private, however. Recent reporting shows that both reached another major milestone in 2026, graduating from high school. Zoe graduated in May, while Thomas’s graduation took place in Los Angeles in early June. Dennis and Kimberly were both present at Thomas’s graduation.

Thomas Boone Quaid in 2026: What Is He Doing Now?

The most significant recent information about Thomas Boone Quaid now concerns education.

In May 2026, reports about Dennis Quaid’s child-support filing confirmed that Thomas and Zoe were approaching the end of high school. Thomas was scheduled to graduate on June 3, while Zoe had already graduated on May 23.

By early June, Thomas had completed his high school graduation in Los Angeles. Dennis attended the ceremony and spoke at the event.

People subsequently reported that Thomas planned to attend the University of Colorado Boulder. This should be described as a reported educational plan rather than independently confirmed university enrollment. His intended major and long-term career have not been reliably disclosed.

For readers searching for Thomas Boone Quaid 2024, Thomas Boone Quaid 2025, or Thomas Boone Quaid 2026, this recent transition from high school to college is the clearest meaningful update available.

Thomas Boone Quaid’s Age and Height

Thomas was born on November 8, 2007. As of August 25, 2026, he is 18 years old.

His exact height is not reliably documented by authoritative public sources. Various websites publish measurements, but there is no sufficiently trustworthy source confirming a precise figure. Therefore, a specific Thomas Boone Quaid height should not be presented as fact.

The same principle applies to other personal measurements or lifestyle details. Public information about Thomas is limited, and unsupported celebrity-biography claims should not be treated as established facts.

Why Thomas Boone Quaid Has Remained Private

Privacy is one of the defining characteristics of Thomas’s public story.

Unlike his father and brother, Thomas has not built a career that requires regular interviews, public appearances, or media coverage. Much of the information available about him comes from family reporting, legal documents, or occasional comments made by Dennis Quaid.

That means many commonly searched subjects—including his hobbies, romantic life, detailed education history, career ambitions, and personal finances—remain publicly unconfirmed.

His situation is a useful reminder that celebrity-family connections do not necessarily make someone a public figure. Thomas can be identified through his famous family while still maintaining considerable privacy as an individual.

What Does the Future Hold for Thomas Boone Quaid?

At 18, Thomas is only beginning adulthood, so predicting his long-term career would be speculative.

The strongest current public information is that he completed high school in 2026 and has been reported as planning to attend the University of Colorado Boulder.

Whether he eventually enters entertainment, business, another profession, or a field entirely separate from his family’s careers is not known.

For now, Thomas’s biography is less about celebrity appearances or movie credits and more about family, privacy, resilience, and a transition into adulthood away from Hollywood’s center.

Conclusion

Thomas Boone Quaid is best known as Dennis Quaid’s son, Zoe Grace Quaid’s twin brother, and Jack Quaid’s younger half-brother. Born on November 8, 2007, he became part of a highly publicized medical-safety story as an infant but has since lived largely outside the entertainment spotlight.

The latest verified reporting shows an important new chapter in 2026: Thomas graduated from high school and was reported to be heading toward the University of Colorado Boulder.

Unlike Dennis and Jack, Thomas has not established a public acting career. With much of his personal life remaining private, the most responsible approach is to focus on what is documented rather than speculate about what comes next.

Frequently Asked Questions

How old is Thomas Boone Quaid?

Thomas Boone Quaid was born November 8, 2007, so he is 18 years old as of August 2026.

Who are Thomas Boone Quaid’s parents?

His parents are actor Dennis Quaid and Kimberly Buffington, who were married from 2004 until their divorce was finalized in 2018.

Is Thomas Boone Quaid related to Jack Quaid?

Yes. Jack Quaid is Thomas’s older half-brother. Jack is Dennis Quaid’s son with actress Meg Ryan.