Epidemiological studies show a clear link between smoking (active or passive) and the risk of developing type 2 diabetes (T2D). Smoking increases all-cause mortality as well as the risk of macro- and microangiopathic complications (nephropathy in T2D patients, retinopathy and neuropathy in type 1 diabetics); it contributes to glycemic imbalance and promotes gestational diabetes. Preventing smoking in individuals at risk for T2D and promoting smoking cessation in T2D patients are therefore a public health priority, according to a recent expert consensus published by the Francophone Society of Tobacco Control (SFT) and the Francophone Diabetes Society (SFD).