This study assesses the association of sustainable development (SD) with environmental technologies, forest area and developmental indictors in selected 39 economies. It develops global sustainable development index (GSDI) as an integration of environmental sustainability index (ESI), economic development index (EDI) and social development index (SDI) during 2000-2016 using composite Z-score technique. Thereupon, it explores the influence of environmental technologies, deforestation, ESI, EDI and SDI on GSDI using country-wise panel data. The results infer that there exists a high inequality in SD due to diversity in socio-economic structure of selected countries. Most developed economies have a better position in SD due to their relatively better position in environmental, economic and social developmental related variables. India, South Africa and Tunisia have low values of ESI, EDI and SDI, thus, these countries are in worst position in SD. Empirical results exhibit that SD is positively associated with environmental, economic and social development, forest area and environmental technologies. It recommended that protection of forest area maintains the quantity and quality of natural resources and provide ecological security. Accessibility of electricity for all community, discovery of environmental technologies, use of green technologies in production activities may be effective to increase socio-economic, environmental and sustainable development.