Gardai at Dun Laoghaire are looking for help in finding 54 year old Sylvia Walsh, originally from Whitehall but who recently moved to the Foxrock/Blackrock area.
Sylvia last made contact with her family on Monday the 12th of January of this year.
It is believed she spent some time in the Cork City area in February and March.
She is described as five foot three or four in height, with a thin build and fair or brown coloured hair.
Anyone who has seen Sylvia or who can assist in locating her is asked to contact gardai.