The Duchess of Kent was Katharine, Duchess of Kent, born Katharine Lucy Mary Worsley in 1933. She was married to Prince Edward, Duke of Kent, a cousin of Queen Elizabeth II. Katharine passed away on September 4, 2025. She was known for stepping back from royal duties in 2002 to focus on teaching music and charity work. She was the oldest living member of the British royal family from the death of Queen Elizabeth II in 2022 until her own death in 2025.

As of September 2025, there is no other current Duchess of Kent following her passing.