Beloved 'Boy Meets World' Star William Daniels Celebrates 99th Birthday

The veteran actor shares his secrets to staying healthy and happy well into his 90s.

Mar. 31, 2026 at 12:27pm

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An extreme close-up of a vintage television screen displaying a glitching, static image of the character Mr. Feeny from the TV show 'Boy Meets World'. The screen is surrounded by a luxurious, textured frame of shimmering gold and velvet, creating a high-contrast, glamorous aesthetic.A timeless TV icon's milestone birthday celebrates the enduring power of wisdom, compassion, and a life well-lived.Los Angeles Today

William Daniels, best known for his role as the wise and caring Mr. Feeny on the 1990s sitcom 'Boy Meets World', is celebrating his 99th birthday. The Los Angeles-based actor credits his longevity to a balanced lifestyle of regular exercise, a nutritious diet, and keeping his mind active through reading and staying connected with fans.

Why it matters

Daniels' inspiring story provides valuable insights into healthy aging, offering practical tips that readers can apply to their own lives. As a beloved TV icon, his milestone birthday also highlights the enduring appeal of 'Boy Meets World' and the timeless wisdom imparted by his iconic character.

The details

Daniels plans to celebrate his 99th birthday on March 31 with his wife of 75 years, Bonnie, and their two sons. The actor, who has had a prolific career spanning decades, including Emmy-winning work on 'St. Elsewhere' and voicing KITT on 'Knight Rider', says he stays active by working out with a personal trainer twice a week. He also maintains a balanced diet, enjoying homemade pasta and salads, as well as hearty breakfasts at his local deli. To keep his mind sharp, Daniels reads the New York Times daily and stays connected with fans through appearances and Cameo.

  • Daniels will celebrate his 99th birthday on March 31, 2026.
  • He appeared at San Diego Rocket Con 2026 and Pasadena Comic Con 2026 this year.

The players

William Daniels

A veteran actor best known for his role as Mr. Feeny on the 1990s sitcom 'Boy Meets World'. Daniels has had a prolific career spanning decades, including an Emmy-winning performance on 'St. Elsewhere' and voicing the character KITT on 'Knight Rider'.

Bonnie Daniels

William Daniels' wife of 75 years, who is 96 years old.

Michael Daniels

One of William and Bonnie Daniels' two sons, who will be cooking a birthday meal for his parents.

Robert Daniels

One of William and Bonnie Daniels' two sons.

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What they’re saying

“I think the most important thing you should know is that I am very lucky. I've been able to work and keep active and have a sense of purpose. I was on 'Boy Meets World' until I was 73 years old!”

— William Daniels, Actor

“I have a wonderful wife, Bonnie, who has put up with me for 75 years. She keeps me busy.”

— William Daniels, Actor

“My advice to others is to keep moving. Do things you enjoy and find some kind of exercise that you like.”

— William Daniels, Actor

What’s next

Daniels plans to continue engaging with fans through appearances and Cameo, sharing his wisdom and insights on healthy aging.

The takeaway

William Daniels' inspiring 99th birthday celebration showcases the power of maintaining a balanced lifestyle, staying active, nurturing close relationships, and keeping the mind engaged. His enduring popularity as the beloved Mr. Feeny proves that positivity, purpose, and a lifelong commitment to learning can lead to a long, happy, and fulfilling life.