In every organization, periodic training of the staff in order to improve upon their technical know-how is very critical in motivating staff to give off their best towards the growth of the organization. The purpose of this study is to examine the importance of training and development on employee performance within MTN Ghana. Using a cross sectional study, questionnaires were administered to 120 staff of MTN Ghana to solicit their view on whether or not staff training in the organization has any impact on their performance.  The data was analysed using SPSS and the description done using percentages and frequencies.  The results show that MTN has an effective training program and as such would enable them acquires the knowledge and expertise necessary to perform their roles in the organization. Furthermore, majority of respondents disagreed that their personal career objectives has been enhanced by the training provided by the organisation. The study also revealed that most of the respondents agree that staff training offered by MTN has improved their job performance and has therefore reduced wastage in the organisation thereby enhancing both staff and organizational performance. Majority of the respondents also mentioned that their personal career objectives have not been enhanced by the training provided by the organisation. With regards to the procedures used to evaluate training programs, the study found the lecture method and classroom instruction as the dominant methods used for training respondents. It is however recommended that management of MTN should give attention to staff education, training and development programs by implementing strategic programs aimed at training staff at all levels, since it was established that training has a positive correlation with staff performance.