In the current economic situation, the solution to the problems of diversification of mining regions is relevant not only in terms of economic outcome, but also the need to change the ecological situation in industrial regions towards its improvement. Diversification of the region’s economy is associated with the idea of expanding the range of economic activities and considered as a mechanism to reduce risks and mono-dependence of the regional economy. The study suggests that tourism could become one of the areas of diversification and greening of the mining region economy by the example of the Kemerovo region. The structure of the GRP and individual indicators characterizing the state of the tourism sector were analyzed to assess the impact of tourism on the diversification of the economy of the Kemerovo region. Despite the fact that the total share of the tourism sector has changed slightly over the 5 years, its multiplier effect has a positive impact on the state of the service sector and the economy of the entire region. It was confirmed by the results of the analysis. The optimistic scenario for the development of the Kemerovo region determines the large role of tourism in the diversification and greening of the region’s economy. The implementation of the conservative scenario that provides the supportive development of traditional sectors, does not exclude opportunities for the development of tourism, which will ensure the effective and long-term sustainable development of the Kuzbass.