This document presents Sierra Leone’s Intended Nationally Determined Contribution (INDC) in response to decisions adopted at the 19th and 20th sessions of the Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC), that invite Parties to communicate to the Secretariat their INDCs, towards achieving the objective of the UNFCCC as set out in Article 2 of the Convention. The national circumstances of Sierra Leone have been fully taken into consideration during the development of the INDC. This includes national and sectoral strategies which already exist in the National Development Plan–the Agenda for Prosperity. A review of the current status of implementation of the cross-cutting issues of the Climate Convention at the national level has been documented. These include (a) research and systematic observation systems; (b) technology transfer; and (c) education, training and public awareness. The process is also built on the participatory multi-stakeholder and cross-sectoral consultative processes at national and district levels.