* Brad Simpson
Cody Simpson's father is Brad Simpson. He is a former professional triathlete who competed in the International Triathlon Union (ITU) World Championship Series. He is also a qualified lifeguard and surf lifesaver.
Mother
* Angie Simpson
Cody Simpson's mother is Angie Simpson. She is a former professional swimmer who competed for Australia at the 1984 Summer Olympics in Los Angeles. She is also a qualified nurse.
Sister
* Alli Simpson
Cody Simpson's sister is Alli Simpson. She is a singer-songwriter who has released two EPs and several singles. She has also appeared on the Australian television series "The Voice."
Brother
* Tom Simpson
Cody Simpson's brother is Tom Simpson. He is a professional wakeboarder who has won several national and international titles. He is also a qualified personal trainer.
Grandparents
* Michael and Colleen Simpson
Cody Simpson's grandparents are Michael and Colleen Simpson. Michael Simpson is a retired accountant and Colleen Simpson is a former primary school teacher.
Uncles and Aunts
* Mark Simpson, Scott Simpson, Craig Simpson, and Karen Simpson
Cody Simpson has four uncles and aunts: Mark Simpson, Scott Simpson, Craig Simpson, and Karen Simpson. Mark Simpson is a retired police officer, Scott Simpson is a qualified lifeguard, Craig Simpson is a marine biologist, and Karen Simpson is a qualified physiotherapist.