The girl was wading in shallow water on K-gari, formerly known as Fraser Island, with adults about 4.30pm on Wednesday when a dingo approached and bit her on the leg as she crouched down.
Nearby witnesses created a distraction and provided assistance.
The girl was transported from Yidney beachfront to the Happy Valley ambulance station where she received first aid for minor wounds.
Arrangements were made to transport her to the mainland for further medical assessment.
Queensland Parks and Wildlife Service (QPWS) rangers are investigating the incident and working to confirm the identity of the dingo involved.
There has been a spate of dingo incidents on the island.
An 18-year-old woman was bitten on the back of the leg when she was part of a tour group walking to Lake Wabby on February 17.
Hours later a person on a separate tour was nipped while walking on the beachfront near Dilli Village, marking six dingo incidents in as many weeks.
A German tourist was also bitten on the leg at Gerowweea Creek on March 15.
Rangers have urged visitors to K'gari to be vigilant, never to walk alone and to carry a stick at all times.
Dingo incidents should be reported to rangers.
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