Hollie Johnston Dykes (born 12 September 1990) is a retired Australian gymnast who was born in Gold Coast, Queensland and began gymnastics at the age of four and a half.
She started training at the Australian Institute of Sport (Canberra) in 1998 and was awarded a full scholarship there in 2000.
She won gold in the women's floor exercise and as part of the women's team final.
She earned a silver in the women's beam and a bronze in the women's all-around, beating Imogen Cairns of England.
Later that year, Dykes competed in the World Championships in Aarhus, Denmark.
She helped the Australian team to a respectable seventh-place finish, an improvement on the eight place in the 2004 Olympics.
However, a fall from beam in qualification rounds left her unable to progress to the apparatus final, where she was a medal prospect.
In the all-around, Dykes was one of only half a dozen gymnasts not to fall, but she still finished out of the medals, in seventh place.
Hollie announced her retirement from gymnastics on 11 January 2008, citing personal reasons.