Quitlines are telephone-based tobacco cessation services that help tobacco users quit. Services offered by quitlines include coaching and counseling, referrals, mailed materials, training to healthcare providers, Web-based services and, in some instances, free medications such as nicotine replacement therapy (NRT).

Much research shows that quitlines are highly effective in helping tobacco users quit. Due to their ability to reach and serve tobacco users, regardless of location, quitlines have quickly spread across North American. Today, residents in all 50 states, the District of Columbia, each U.S. territory, all ten Canadian provinces and two territories have access to public quitline services.