阿拉图斯（西库昂）（英语：Aratus of Sicyon），（前271年－前213年），军事将领及政治家，其父西库昂的克雷尼亚斯（Cleinias）被罢官后，他随之流亡到阿尔戈斯。公元前251年他重夺西库昂，并使与亚该亚同盟联合而为一以抵御马其顿。公元前243年他从马其顿人手中夺得科林斯，并支持阿卡亚邦联合抗击马其顿。公元前233年，阿拉图斯败于斯巴达克莱奥美奈斯三世后，不得不与马其顿议和。他与腓力五世一同指挥抗击埃托利亚的同盟战争（公元前220年——公元前217年），但却抵制腓力五世反罗马政策。

Aratus (/əˈreɪtəs/; Greek: Ἄρατος; 271–213 BC) was a statesman of the ancient Greek city-state of Sicyon and a leader of the Achaean League. He deposed the Sicyonian tyrant Nicocles in 251 BC. Aratus was an advocate of Greek unity and brought Sicyon into the Achaean League, which he led to its maximum extent. He was elected strategos numerous times and led the Achaeans against Macedonia, the Aetolians and the Spartans. After the Spartans defeated and nearly destroyed the cities of the Achaean League, he requested Antigonus Doson of Macedonia to help fight against the Aetolians and Spartans. After Antigonus died in 222 BC, Aratus did not get along with Philip V of Macedon, who wanted to make the Achaean League subject to Macedonia. Polybius and Plutarch record that Philip had Aratus poisoned.