The 20 year old was last seen at his home in Fforestfach.
Nicholas Lewis, 20, is missing from his home in Weig Fach Lane, Fforestfach.
He is described as 5 foot 7 with a slight build and dark hair and is known to have been carrying a rucksack.
He is believed to have been seen in Swansea City centre on the afternoon of Thursday 28th April and also has links to the Cumbria region.
It is not known what he was wearing went he went missing but it has been confirmed that he was carrying a rucksack.
Anybody who has seen him is urged to contact South Wales Police via 101 quoting reference *0160207.