Developing green ports is one of the current global trends for countries with maritime advantages. Recognizing this trend, Singapore has actively developed green port clusters and, among others, has pioneered in this work. The current state of green port cluster development in Singapore is examined regarding the use of green materials, green energy, digital technology integration, and green port cluster development policies. Thereby, the article identifies existing limitations and draws lessons for Vietnam to develop green ports quickly, efficiently and sustainably.