Joanne Hogg is a Northern Irish musician, best known for her work as the lead singer and songwriter with the Celtic Christian progressive rock band Iona.

Hogg was born in Ballymena to a family of medical missionaries. Her father is a Presbyterian minister, her mother a nurse; her family also includes three sisters and two brothers. With medicine strong in the family, it was natural for Hogg to become a doctor and she studied medicine at Queen’s University Belfast. In her third year, Hogg was singing at the Christian Artists talent event and was convinced to sing in a school ministry at Youth for Christ in Denmark. After a year, Hogg got married and returned to university to complete her two remaining years of schooling.

After graduating, Hogg interned as a junior doctor at Belfast City Hospital to complete her registration. Six months into working at the hospital, she was taken ill and stopped working for seven months to recover; after recovering, she completed her registration as a doctor, but was advised on medical grounds not to continue in full-time medical work for a year.

During her convalescence, she had been contacted by Dave Bainbridge and Dave Fitzgerald, who had considered forming a band. In 1989, Hogg ceased practicing medicine, and Iona was born. Since then, Hogg has sung all over Europe and America. Iona’s recordings have become successful worldwide, making them Europe’s best-selling contemporary Christian band.