Almost 60 premises were found flouting the smoking ban in Glasgow during the first week of the new law.
Some businesses failed to display no smoking signs
Glasgow City Council issued 10 warnings and one fixed penalty fine of £200 was imposed on a restaurant manager because of smoking on the premises.
Environmental Protection Officers visited 387 premises and found the most common fault to be a lack of signs. They also voiced concern about litter.
The smoking ban in enclosed public places came into force on 26 March.
The 10 warnings were issued to three restaurants, one nightclub, one snooker hall, one hot food shop, one hotel and three pubs.
Nine hotels, seven non-compliant
91 restaurants, 21 non-compliant
230 licensed premises, 23 non-compliant
57 other, seven non-compliant
Non-compliance can to range from not having proper signage to evidence of smoking.
Councillor David Stevenson, convener of environmental protection services, said: "We are pleased that for a city our size we've had little formal enforcement to carry out.
"However, we are concerned about cigarette ends being disposed of carelessly."
The council has received 12 direct complaints since the ban was introduced and a further 26 from the National Compliance service.