Indonesian police say an Australian woman has died in Bali after slipping and falling into a river.

The North Kuta police chief Reinhard Nainggolan says the woman was walking in the Kerobokan region of Bali with her husband on Sunday.

At about 4:00 pm, local time, she slipped and fell into a river.

Her husband tried to grab her hand and pull her to safety but the river was flowing too fast and swept her away.

About two hours later her body was found about 100 metres downstream.

The Department of Foreign Affairs and Trade says the 40-year-old woman is from Victoria.

She is the fourth Australian to die on the Indonesian resort island in less than six months.

In that time there have been a number of violent attacks on Australians there too, including the rape and robbery of a Perth woman at knifepoint.