The man was taken to Leeds General Infirmary and is in a serious condition, however his identity is unknown.
Police are now appealing for anyone who may recognise the man as a friend or relative, to contact them.
The man is described as a white, believed to be in his early to mid twenties and 5’7” to 5’10” tall.
He is of slim to medium build, with a pale and clear complexion, is clean shaven and has brown hair which was longer on top and shaven at the sides.
The man also has hazel to green eyes and a small v-shaped scar on his right cheek close to his mouth.
When he was found, the man was wearing a black hooded jacket with shiny black writing across the back bearing the logo ‘SUPERDRY’ and Chinese writing above this.
He was also wearing a black polo shirt with white and beige stripes, blue jeans and size 9 black Adidas trainers.
Police are also appealing for any witnesses to this incident, as well as anybody who may recognise the description of the injured man to contact Stainbeck CID on 0845 6060606.