Childhood under-nutrition is prevalent in many developing countries including Nigeria, and is the underlying cause for more than half of all childhood deaths. Based on the recent Nigeria Demographic and Health Survey (NDHS), the prevalence of under-nutrition between 2008 and 2013 has risen, despite an increase in exclusive breastfeeding (EBF) rate over the same period. This study was undertaken to assess the feeding practices, nutritional status, and relationship between feeding practices and nutritional status among children aged 0 – 24 months in Port Harcourt. Pre-tested, semi-structured, self-administered questionnaires were used to collect data from mother-child pairs who met the study inclusion criteria. Data were collected from November to December 2016, from 307 mother-child pairs attending six health centres in Port Harcourt. Data collected included the sociodemographics of the mothers and their children, mothers’ infant feeding practices and knowledge about Infant and Young Child Feeding (IYCF) recommendations. Foods consumed in the preceding 24 hours were obtained from a 24-hour dietary recall. The weights of the children were measured in kilograms, to the nearest 0.1kg. Supine lengths and occipito-frontal circumferences (OFC) were measured in centimetres to the nearest 0.1cm. Nutritional assessment was based on the WHO classification of nutritional status. Data were analysed using SPSS version 20.0. The mean age of the children was 5.6 ± 6.1 months and median age was 3.0 months. Two hundred and seven (67.4%) children were less than six months old and 100 (32.6%) were between the age of six and 24 months. The mean age of the mothers was 29.8 ± 5.0 years.