Six dingoes have been found dead on Queensland's Fraser Island, with one located in a shallow grave.

The Queensland Parks and Wildlife Service (QPWS) said deliberate baiting was a high possibility and the dingoes would be inspected to confirm the cause of death.

The carcasses were found around Orchid Beach over the past four days.

Environment Minister Dr Steven Miles said he was alarmed the animals appeared to be deliberately targeted and killed.

"Dingoes are as much a part of Fraser Island as the world-renowned sand dunes and crystal clear blue lakes," he said.

"Dingoes are protected in Queensland's protected areas under state law and deliberate harming will not be tolerated."

Police and the national parks and environment departments are investigating.

The maximum penalty for killing a dingo on a protected area is $353,400 or two years' jail, but in this case other penalties could potentially apply.