| Katherine Baumchen | |
 Baumchen on her 110th birthday in 2025 | |
| Birth: | 10 February 1915 Saskatchewan, Canada |
| Age: | 110 years, 306 days |
| Country: |  CAN USA
|
| Validated | |
Katherine Baumchen (born 10 February 1915) is a Canadian-American supercentenarian whose age is validated by the Gerontology Research Group (GRG). She is currently the oldest known living Canadian-born person.
Biography[]
Katherine Baumchen was born in Saskatchewan, Canada, on 10 February 1915. She was one of eight children raised on a wheat farm in Saskatchewan. The family had their own pony, a buggy, pigs, cows, calves, chickens, and geese. A year after the Great Depression began in 1929, her family moved to Toronto.
In 1940, at the age of 25, she secured an office job, first training on the comptometer, a key-driven mechanical calculator. This role led to a position with Standard Oil Company, where she worked alongside her older sister, Marie. In 1955, she took a vacation to Los Angeles. She and her sister liked it so much that they decided to stay for a year. By 1964, the sisters had settled there permanently. She found an office job with Standard Oil and also began volunteering weekly at St. Vincent Medical Center in Los Angeles, a commitment she maintained for 25 years. She retired in 1980 at the age of 65.
On 10 February 2025 she turned 110 becoming a supercentenarian.
Baumchen currently lives in Pasadena, California, United States at the age of 110 years, 306 days.