Oraiokastro (, also Oreokastro) is a municipality in the Thessaloniki regional unit, Greece, and a suburb of Thessaloniki.
The municipality Oraiokastro was formed at the 2011 local government reform by the merger of the following 3 former municipalities, that became municipal units:
The municipality has an area of 217.855 km<sup>2</sup> and the municipal unit Oreokastro which is located 11 km north of Thessaloniki. has an area of 21.855 km<sup>2</sup>. The municipality has a population of 40,004 inhabitants according to the October 2021 census.
The Temple of the Hellenic Gods (ÃÂûûîýÃÂý ÃÂñÃÂÃÂ), a Hellenic temple, is located in Oraiokastro.
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