This study investigated the effect of strategic planning and total quality management practices on organisational productivity. This study employed a quantitative approach using Jamovi software. Sample data were collected from 167 respondents who are in Tanzania Zambia Railway Authority (TAZARA) management using a structured-questionnaire. Model fit and construct validity were checked using confirmatory factor analysis and correlation matrix while mediation analysis was carried out using GLM procedure. The results of study present that strategic planning has a significant effect on productivity. The results also indicate that customer focus and important innovation foster organizational productivity and partially mediate the relationship between strategic planning and productivity. The study also shows that education and training has no significant effect on productivity and does not mediate strategic planning and productivity association.