Who is John Travolta's famous sister?

John Travolta’s Sister You Might Not Know

When people think of John Travolta, they picture the slick-haired star of Grease and Saturday Night Fever, lighting up the screen with charisma and dance moves. But long before the spotlight found him, he wasn’t the only Travolta making waves in showbiz. His older sister, Ellen Travolta, carved her own path in Hollywood with a steady, decades-long career that many don’t immediately connect to the family name.

Though not as globally famous as her younger brother, Ellen built a solid reputation in television and theater. Best known for her role as Millicent on the long-running sitcom Charles in Charge, she also appeared in numerous TV shows like Love, American Style, Quincy, M.E., and even guest-starred on Happy Days—a show John famously lit up as Vinnie. Her stage work, particularly in regional theater, earned her deep respect in the acting community.

The siblings shared a memorable moment in the spotlight on December 8, 1979, when they attended the 2,000th Broadway performance of Grease and its after-party. It was a full-circle moment—John had just become a household name thanks to the film adaptation, while Ellen was quietly thriving in her own right. Their bond, rooted in a shared love for performance, remained strong despite their differing levels of fame.

Ellen Travolta may not have headlined stadiums or graced magazine covers like her brother, but her contributions to entertainment are undeniable. In an industry obsessed with overnight stardom, she represents the quiet dedication of a working actor. And yes—she’s definitely the famous Travolta you might’ve missed.