Police are asking anyone who may have seen Hamilton man Antony Kong to come forward.
Mr Kong, 20, was last seen at home in the suburb of Hillcrest, at about 9pm last night.
Police and Mr Kong's family have concerns for his welfare.
He is likely wearing a grey long-sleeved hooded sweatshirt, is about 172cm tall, and may be driving a white 2016 Renault van, registration KDT73.
Information can be provided to police by calling 105, citing file number 190921/6356, or in an emergency, 111.