Family name เกาะจู (เกาะจู 
) , in the world, is a very rare cognomen. The cognomen เกาะจู is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| เกาะจู | Thailand |
| มนัญญา เกาะจู member of Thai idol girl group BNK48, TH |
|