Police are appealing for public assistance to help locate missing 14-month-old girl Acelynn Dutoit.

Acelynn was last seen on Saturday 25 January in the company of her mother Stephanie Davey.

Police and family hold concerns for her welfare due to her age and the length of time she has been missing.

Investigators believe Acelynn is still in the care of Stephanie and that they're still in the Benalla area.

Anyone who has any information or sees Stephanie or Acelynn is urged to contact Benalla Police Station on 5760 0200.