Acentrogobius dayi, also known as Day's goby, is a species of goby found in the western Indian Ocean from the Persian Gulf to Pakistan.

[2] It is also found in brackish and freshwater streams of south-western Asia.

[3] This species reaches a length of 11.0 cm (4.3 in).

[4] The fish is named in honor of Francis Day (1829-1889), the Inspector-General of Fisheries in India,[5]

This Gobiidae-related article is a stub.