奥克夏特斯 （波斯语: وخش‌ارد ），出身巴克特利亚，是亚历山大大帝王后罗克珊娜的父亲。

奥克夏特斯首度出现于史籍中是贝苏斯手下的其中一个督办，他当时伴随贝苏斯撤往粟特的路上，并横渡阿姆河。在贝苏斯死后，奥克夏特斯把他的妻子和女儿罗克珊娜安置在粟特岩山的要塞上以策安全，尽管他认为这个要塞坚不可摧，但亚历山大终究攻克这座要塞，并俘虏奥克夏特斯的妻女。亚历山大对奥克夏特斯的妻女以礼相待，甚至爱上了罗克珊娜。阿利安记载罗克珊娜相当的漂亮，尽管罗克珊娜已成俘虏，但亚历山大仍愿意把她娶过来。奥克夏特斯听闻自己妻女已落到 亚历山大手中，甚至亚历山大有意娶自己的女儿，随即归降亚历山大。奥克夏特斯因此受到亚历山大隆重对待，并举办盛大的宴席来庆祝婚礼。

For the stick insect genus, see Oxyartes (insect).

Oxyartes (Greek: Oxyártēs, in Persian: وخش‌ارد (Vaxš-ard), from an unattested form in an Old Iranian language: *Huxšaθra-) was a Bactrian, father of Roxana, the wife of Alexander of Macedon. He is first mentioned as one of the chiefs who accompanied Bessus on his retreat across the Oxus river into Sogdiana (329 BC). After the death of Bessus, Oxyartes deposited his wife and daughters for safety in a rock fortress in Sogdiana, which was deemed impregnable, but which nevertheless soon fell into the hands of Alexander's forces. Alexander not only treated his captives with respect and attention, but was so charmed with the beauty of Roxana as to decide that he wanted to make her his wife. Oxyartes, on learning these tidings, is said to have hastened to make his submission to Alexander, who received him with the utmost distinction. The nuptials of his daughter with the king in 327 BC were celebrated with a magnificent feast.