64 year old Philip Magor recently returned from working abroad.
He was last seen at home at around 9.30am on Wednesday, November 6.
CCTV enquiries place him at Thomas Street, Llanelli at 11.40am that day, but his movements since then are not known.
Philip doesn’t have access to a car, so he is likely to be travelling on foot or using public transport.
He is described as 5ft 5ins tall, of broad build, slightly tanned, with blue eyes and short, grey hair. He is carrying a blue back pack.
He has local links in Carmarthen, Pontarddulais, and Aberystwyth, and links across England.
Anyone who has seen Philip, or knows where he is, is urged to contact Dyfed-Powys Police by calling 101. If you are deaf, hard of hearing, or speech impaired text the non-emergency number on 07811 311 908.