Papuligobius uniporus is a species of small goby in the subfamily Gobionellinae.

[5] P. uniporus, together with P. ocellatus, appear most similar to the genera Rhinogobius and Tridentiger, and may share an evolutionary origin with these other groups of Gobies.

[5] Endemic to Southeast Asia, this species has been historically reported in the Ma River (Laos), though it is also probably found in Vietnam.

[6] It is also demersal: preferring to live near the bottom of wetlands in the Ma River basin.

[1][6] It is also known to inhabit small streams: preferring rocky substrate in clear, shallow, fast flowing channels.