Simon Griffiths, who previously lived in Blackpool, went missing from home in Wigan at around 5pm on Tuesday (June 7).
He is described as white, of average build and with brown hair and tattoos on his face and neck.
A Lancashire Police spokesman said: "Simon was last seen wearing a bright red Under Armour jacket/jumper, light blue jeans, a cap and glasses.”
Phone police on 101 quoting log 1567 of June 7th