This document provides an overview of ecotourism and sustainable development in Kenya. It discusses the meaning and principles of ecotourism, as well as sustainable tourism development. It then examines the growth of ecotourism in Kenya, including its history and key organizations involved. Protected areas that support ecotourism are also reviewed. The document analyzes the impacts and challenges of ecotourism in Kenya, and discusses eco-rating of lodges and a case study of an eco-rated lodge.