Chantelle Lee Newbery (née Michell) (born 6 May 1977 in Melbourne, Victoria) is an Australian diver, and olympic champion. Her first international success was at the 1998 World Aquatics Championships in Perth, Australia, where she won a bronze medal in the 3m Springboard event. Later that year Chantelle became a Commonwealth Champion by winning the gold medal in the 1m Springboard event at the 1998 Commonwealth Games in Kuala Lumpur, Malaysia. She also won the silver medal 2 days later in the 3m Springboard.
At the 2000 Sydney Summer Olympic Games she finished fourth in the Synchronised 3m Springboard Event. But the highlight of her diving career was winning the gold medal in the 10m Platform event at the 2004 Athens Summer Olympic Games ahead of Lao Lishi of China and fellow Australian, Loudy Tourky. Chantelle is one of only a handful of women who have tasted Olympic success after becoming mothers.
In 2005, she was inducted into the Australian Institute of Sport 'Best of the Best'.
Chantelle took time away from diving for almost a year while pregnant with her first child. She gave birth to her son Jet in 2002. In May, 2004, Chantelle married Robert Newbery to allow them to compete at the Athens Olympics as husband and wife. Their second son, Ryder, was born in 2006.
In 2009 she told Australian magazine Woman's Day that she was admitting herself to a psychiatric hospital for severe depression which has seen her attempt suicide twice this year.