The proposed research aims to examine The Impact of Natural Resources and Foreign Direct Investment on Economic Growth in Algeria during the period 1970-2021 and compare it with the Saudi economy, which is considered the closest economy in terms of natural resources. Analyse the factors influencing economic diversification and innovation. The research seeks to understand the impact of natural resources, including oil and gas, on the Algerian economy and study the factors influencing sustainable development and economic diversification. This research employs the Autoregressive Distributed Lag (ARDL) approach. The findings suggest that, in total, there is The Impact of Natural Resources and Foreign Direct Investment on Economic Growth in Algeria during the period 1970-2021. The positive correlation between resources and economic growth highlights resource extraction's role in Algeria's economic development. It underscores the need for diversification to reduce dependence on commodity markets. The research focuses solely on economic factors, neglecting social and political dynamics. Limited data availability may constrain the depth of analysis, potentially overlooking nuances in the relationship between natural resources, FDI, and economic growth. The findings offer insights for Algerian policymakers to develop strategies for sustainable economic growth, emphasising the need for diversification beyond natural resources. Recommendations may inform policy decisions aimed at fostering innovation, reducing dependency on volatile resource sectors, and promoting environmental sustainability.