Vietnam is known as one of the high plastic consumption countries in Southeast Asia. This study initially determined
characteristics of microplastics (MPs) including morphology, polymer type, and abundance at peatland areas in
Mekong Delta in Vietnam. The MPs level was found with an average abundance of 192.3 ± 261.3 items kg
−1 .In details, those values at Thanh Hoa, Duc Hue, and Tan Thanh were observed at 57.0 ± 110.4 items kg
−1, 7.0 ± 10.6 items kg −1 , and 513.0 ± 186.9 items kg −1 , respectively. The results indicated that MP particle contaminations in peatland sediments are significant among sampling sites (p(300–1000μm) was the most abundant in sediment samples. Moreover, the most popular colors observed in peatland
sediments were aqua (26.6 %), white (25.6 %), blue (25.4 %), and green (12.7 %). Ourfindings indicated that anthropogenic factors and environmental processes that caused the transformation/transportation and accumulation, leading to rising MP contaminant concerns in peatland areas in Mekong Delta in Vietnam, mainly in terms of the spatial distribution of MPs. In summary, this study provided an in-depth knowledge of microplastic pollution in peatland areas, which is crucial for the building sustainable development strategies in these areas.