Robert Colin Boxall, 34, is wanted in connection with an investigation into the supply of class A drugs.
He is described as white, around 5ft 11ins tall, of large build and with shaven, short grey hair.
Police are making enquiries to locate him and are turning to the public for assistance.
Officers believe he is likely to still be in the Portsmouth area.
If you have seen him or have any information on his whereabouts, then please call 101, quoting the reference 44230235319.
Information can also be provided 100% anonymously via Crimestoppers by calling 0800 555 111 or online.
