Amanda Tomison, 47, has been reported missing from her home in Cullen, Moray, and has not been seen since July 6.
She is known to travel extensively throughout the country by public transport and has recently visited Orkney, Shetland, Gourock, Pitlochry and Aviemore.
It is believed she might have been in the Fochabers area on Thursday July 14 or Friday July 15.
Ms Tomison is described as about 5ft 2in tall, slim build, shoulder-length dark brown hair with a dark complexion. She wears spectacles and speaks with a Scottish accent.
It is not known what clothing she is likely to be wearing although she frequently walks with a stick and may have a suitcase and tent.
Anybody who has seen her since the beginning of July or has information regarding her potential whereabouts is asked to contact Police Scotland.