Andrew Moriarty was last seen at 2am on Saturday, February 29, in Kelso town centre.
The 28-year-old is described as 6ft 2in tall, with short red hair.
When last sighted, he was wearing a grey Nike hooded top, blue jeans and grey Nike trainers.
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Anyone with information on his whereabouts is asked to call Kelso police station on 101, quoting reference number 1,357 of March 1.