Pomatoschistus bathi is a species of goby native to the eastern Mediterranean and the Sea of Marmara where it occurs at depths of from 7 to 14 metres (23 to 46 ft) on substrates with a sand or mud component.

This species can reach a length of 3 centimetres (1.2 in) TL.

The Bath's goby feeds on bosmiden, brine shrimps, lobster eggs, oyster eggs, zoobenthos and zooplankton.

[3] In 2013, it was listed as data deficient but was changed to Least Concern the following year because the population is thought to stable, it may be under-represented and there are no known threats.

The specific name honours the German ichthyologist Hans Walter Bath (1924–2015).