The Samarga () is the northernmost river in the Primorsky Krai territory in the far eastern part of Russia. It is long, and has a drainage basin of , making it the largest coastal river in the northern Sikhote-Alin mountain range. It flows into the Sea of Japan. The river system is a unique and relatively untouched centre of biodiversity in the Eastern Sikhote-Alin mountains because it is in a remote and mountainous region.