Gardaí are appealing for social media sharing of 45-year-old Michael Cunniffe, who went missing from Tuam, Co Galway, on Saturday night.
Michael was last seen when he left work at Parkmore Industrial Estate in Galway late on Saturday night.
Michael is described as being 5ft 6″ tall, medium build and has short brown hair.
When he last seen, Michael was wearing a maroon hoodie, black jeans and white runners.
He was possibly driving a black Seat Ibiza car with a number plate of 06-D-6792.
Anyone with information is asked to contact Tuam Garda Station on 093 70840, the Garda Confidential Telephone Line on 1800 66-61-11 or any garda station.