Abdopus undulatus is a species of octopus within the family Octopodidae.

[1] The species is found near the coasts of Tongatapu, Tonga, in benthic environments at depths of 8 to 20 metres (26 to 66 ft).

Individuals to grow up to 3.3 centimetres (1.3 in) in length.

[2][3]