Summary: In a two year prospective study of neonatal hypoglycaemia among babies admitted into the neonatal unit, Ogun State University Teaching Hospital, Sagamu, the overall inci dence of the condition was 9.5 percent among 675 admissions, while the incidence for in-born babies was 2.4 percent among 1081 live births. The highest prevalence of 25.8 percent occurred in babies of gestational age