Magister Commercii - MCom / This study investigates the effect of public debt on economic growth in South Africa since 1961-2017. Public debt stock is disaggregated into external debt and domestic debt in order to determine the effect of each on economic growth independently. The study employed the ARDL bound test to estimate the long and short run relationship among several macroeconomic variables - real economic growth, domestic debt, external debt, budget deficit, inflation rate and investment. An error correction model was used to analyses the short-run disequilibrium. The results show that there is a short and long run equilibrium relationship between foreign debt, domestic debt, budget deficit, inflation rate and economic growth. The empirical results indicate that external debt negatively affects the real GDP growth in South Africa, both in the short and long-run. Several policy implications emerged from the empirical results. To keep public debt more manageable, South Africa should improve its debt management. Furthermore, the country can make use of debt to equity swaps by privatizing underperforming parastatals. This would make them competitive and efficient.