This paper presents Islamic Republic of Mauritania’s poverty reduction and growth strategy. With the second Strategy for Accelerated Growth and Shared Prosperity (SCAPP) Action Plan 2021–2025, Mauritania is embarking on a new phase in the implementation of its three-five-year strategy to achieve the vision “The Mauritania we want in 2030.” Mauritania, through its commitment to the implementation of the SCAPP, marks its willingness to initiate a large-scale economic, social and environmental transition, on the path of inclusive growth, economic diversification, social cohesion, respect for fundamental rights and human dignity, peace and respect for the environment. The first Action Plan 2016–2020 demonstrated that the implementation of the SCAPP was able to record convincing results. However, some of the objectives could not be achieved, in particular because of the Coronavirus disease 2019 pandemic, which severely affected the world economy, and therefore the Mauritanian economy, which resulted in the emergence of new priorities. This Action Plan 2021–2025 takes into account the lessons learned from the implementation of the first and implements the necessary measures to support the country in its economic recovery and respond to the decisive challenges of the next 5 years, which will be decisive in the preparation of the third Action Plan and the achievement of the 2030 Goals.