Vietnam has experienced a sharp rise in electricity demand in recent years, driven by rapid industrialisation and economic growth. In response, the country has prioritised energy security and sustainable energy expansion to coun-ter the depletion of fossil fuels and address the looming threat of climate change. The country's renewable energy sector has seen notable progress, particularly in offshore renewable energy, which is becoming a key focus for Vietnam, leverag-ing its extensive coastline and abundant wind and marine resources. This over-view examines Vietnam's offshore renewable energy potential, primarily focus-ing on wind energy while considering solar, wave, and tidal energy as comple-mentary sources. Special attention is given to offshore wind energy, which holds significant potential for contributing to Vietnam's energy diversification and sus-tainable development objectives. This overview examines the potential of float-ing wind energy in Vietnam, highlighting its economic and environmental ad-vantages, its capacity to address the nation's increasing energy demands, and its role in advancing sustainability objectives, enhancing energy security, alleviating land-use pressures, and supporting climate goals. The potential and future out-look of wave and tidal energy in Vietnam and the available technological ad-vancements are also presented.