Warns (Dutch pronunciation: [ˈʋɑr(ə)ns]; West Frisian: [ˈʋãːs]) is a village in the northern Netherlands.

A battle took place at the Roode Klif (Red Cliff), a nine metre high clay ridge, on the former Zuiderzee (nowadays: IJsselmeer) where the invasion was stopped.

[6] Warns is a stretched out village which developed on the higher clay ridge of Gaasterland in the middle ages.

[7] Warns used to be both an agricultural community as well as a fishing village and has a rather large harbour for its size, and several commander's house.

Count William IV of Holland had planned to attack Stavoren from the back, however its army was destroyed at the Roode Klif (Red Cliff).