* Georgia Nicolson: The protagonist of the series, Georgia is a 14-year-old girl who lives in London with her family. She is known for her outspoken personality and her penchant for getting into trouble.
* Jas: Georgia's best friend, Jas is a loyal and supportive friend who is always there for Georgia. She is more level-headed than Georgia and often helps her to make good decisions.
* Robbie: Georgia's crush, Robbie is a handsome and popular boy who attends Georgia's school. Georgia is determined to win Robbie's heart, but things don't always go according to plan.
* Libby: Georgia's younger sister, Libby is a precocious and mischievous child who often causes trouble for Georgia.
* Dave the Laugh: Georgia's neighbor, Dave is a friendly and affable man who is always willing to lend a helping hand.
* Roger: Georgia's father, Roger is a loving and supportive parent who is always there for Georgia.
* Helen: Georgia's mother, Helen is a busy and sometimes strict parent who is trying to do her best to raise Georgia and Libby.