Police are appealing for public assistance to help locate missing woman Teresa Norris.

The Werribee woman, 40, was last seen on Sunday April 1 in Tarneit, but she has not been heard from since.

Police hold concerns as her disappearance is out of character.

Teresa is not believed to have a phone, wallet or any personal belongings with her.

She was last seen wearing blue jeans, a pale blue top, running shoes and a cap.

Anyone who sees Teresa or has information on her current whereabouts is urged to contact the Wyndham North Police Station on 8734 1100.