This study investigated public perception of the implementation of the corporate mandate of NDDC in South-South Nigeria. The theory adopted for the study was Impression Management Theory, with researchers adopting a survey research method. The population of the study was 37,063,435, from which a sample size of 384 was determined using the Philip Meyer’s Guide. The questionnaire was adopted as instrument for data collection, and data gathered were analysed in tables and percentages. Findings from the study revealed that: there is a moderate level (37%) of public awareness of the corporate mandate of the NDDC in South-South Nigeria; the perception of South-South residents (33%) of the NDDC’s implementation of its corporate mandate is that it is politically influenced; and residents of the South-South Nigeria, as a behavioural response to NDDC’s development-related activities, wait to see if projects will actually start (34%) and monitor the contractors’ works informally (33%). Consequently, the researchers concluded that residents of the South-South Nigeria region perceived the delivery of NDDC’s corporate mandate as politically motivated, affirming that corporations should discharge their mandates, bearing in mind that they have stakeholders to impress. The researchers recommended among other things, that the NDDC should increase awareness of its corporate mandate implementation among residents of South-South Nigeria.