Smoking in pregnancy is a serious health risk to mother and baby that is associated with premature birth, low birth weight and respiratory disorders. Recently it has become apparent that smoking in pregnancy can have long-term consequences for the child, including learning difficulties, elevated risk of diabetes, obesity and asthma. Over the past 30 years there has been a considerable volume of research activity searching for effective smoking cessation interventions that are suitable for pregnant women. This paper will review recent research literature to identify effective smoking cessation interventions and make recommendations for further research.