Maria was last seen leaving her home in Safety Beach about 11am today.
She was expected to go for a short walk but has not returned home.
It is believed she may have boarded a bus.
Police and family hold concerns for her welfare as she has dementia.
Maria is about 170cm tall, with a slim build and has white silver hair.
Police have released an image of Maria in the hope that someone recognises her and can provide information regarding her current whereabouts.
She was last seen wearing a blue puffer jacket, cream pants, and a blue polo top which is pictured in the above photo.
Anyone who sees Maria is urged to contact Rosebud Police Station on 5986 0444.
