The two oldest lottery winners are:

USA: Gloria Mackenzie from Florida became the oldest Powerball winner at 84 years old. She won the $590.5 million Powerball jackpot on May 18, 2013​​.

UK: Dennis Banfield became the oldest UK lottery winner at the age of 87. He and his family won more than £18 million​​.

These individuals hold the records for being the oldest lottery winners in their respective countries.