Frances Cecilia Jonas (born 8 April 2004) is a New Zealand cricketer who plays for Auckland as a slow left-arm orthodox bowler.

[1] In December 2019, at the age of 15, Jonas made her debut for Auckland Hearts in the 2019–20 Hallyburton Johnstone Shield.

[1][3] She took three wickets in the Hallyburton Johnstone Shield final, as Auckland Hearts beat Northern Spirit.

[7][8] As part of the preparation for the series, she played in two warm-up matches for the New Zealand XI Women's team, taking two wickets.

[14] In June 2022, Jonas was named in New Zealand's team for the cricket tournament at the 2022 Commonwealth Games in Birmingham, England.