Bradford police released the photos in connection with a major operation tackling drug dealing in the city.
The men are being sought as part of Operation Stalebank, which has put 80 dealers behind bars for a total of 260 years.
Officers are appealing to the public to come forward to identify the men. The photos are on the police website.
Detective Inspector Ian Bryar said: “Stalebank has made a big impact on the supply and distribution of heroin and cocaine in Bradford District, and more people are due in court later this month on charges of drug dealing. Information from the public has been key in helping us and our partners to run successful arrest operations and bring these people to justice.