During 2014–2016, 37.2% of adults aged ≥18 years with serious psychological distress were current smokers, followed by 27.6% of those with mild to moderate psychological distress and 14.0% of those with no psychological distress. Among adults aged 18–44 and 45–64 years, the percentage of adults who were current smokers increased with the level of psychological distress. Among adults aged ≥65 years, the percentage who were current smokers was less among adults with no psychological distress than among adults with mild to moderate or serious psychological distress.