Police are appealing for information from the public to find Jordan Whitelock, 20, who was last seen about 6.40pm on Wednesday, March 29 at Casino Railway Station.
When Jordan failed to reach his destination at Tweed Heads or make contact with family members, police were notified.
Police and family have concerns for his welfare.
Jordan is described as being of Caucasian appearance, about 180cm tall, medium build with short brown hair and brown eyes. He was last seen wearing a grey shirt and black shorts.
Anyone who may have seen Jordan or has information regarding his whereabouts is urged to contact Grafton police or Crime Stoppers on 1800 333 000.