Police are appealing for public assistance to help locate missing 14-year-old Tylar Kors.

Tylar was last seen on Tuesday, April 11 in the Ballarat area.

She was last seen wearing tracksuit pants and a green jacket and carrying a backpack.

Tylar is described as 160cm with a thin build, blonde or brown shoulder length hair and brown eyes.

It is believed she may be in the Ballarat, Horsham or Dimboola areas.

Police have concerns for Tylar's welfare due to her age and the length of time she has been missing, and have released an image in the hope some recognises her and can provide information on her current whereabouts.

Anyone with information is asked to contact Ballarat Police Station on 5336 6000.