Reviewers performed a network meta‐analysis (NMA) evaluating how the provider impacts the effectiveness of smoking cessation interventions. The network included 284 trials with 659 trial arms; when reported, the number of participants included in the NMA receiving an intervention via each provider ranged from 589 to 27,682 participants. Quit rates were low in all groups (on average, < 11%). Evidence suggests that three providers (lay health advisor, hypnotist, exercise specialist) may increase the numbers of people quitting (on average) by at least 20 per 1000 people; however, reviewers rated evidence for all ten providers as low to very low certainty (general or specialist nurse, stop smoking advisor, psychologist/counselor, physician, pharmacist, dentist, lay health advisor, hypnotist, exercise specialist).