双马童（梵语：अश्विन；IAST：aśvin，音译为阿湿波，字面意思为“驯马者”，按另一些解释，则为“马所生的”）是婆罗门教-印度教中的一对双子神。

双马童主要是吠陀神。关于他们的出身有许多种互相矛盾的说法，后期的说法就更加混乱。据梨俱吠陀记载，双马童是云之女神娑朗由（陀湿多之女）和太阳神苏利耶的一对儿子。值得注意的是，与娑朗由结婚的太阳神是毗婆薮，他被认为是苏利耶的另一个形象；但在原始神话中，毗婆薮与苏利耶未必是同一个人。双马童在吠陀经典里是象征着日出与日落的神，是一对容貌俊美的青年，于每天黎明时乘坐金车驶过天空。在吠陀里，双马童也是驱逐病痛的神医，并且惩治恶徒。吠陀经常提到他们救起一个落水者的故事。双马童似乎总是兄弟两人一起行动。公元前5世纪的古印度语言学家耶斯迦说，他们一个是黑夜之子，一个是黎明之子。

The Ashvins or Ashwini Kumaras (Sanskrit:अश्विन, aśvin-, dual aśvinau), in Hindu mythology, are two Vedic gods, divine twin horsemen in the Rigveda, sons of Saranyu, a goddess of the clouds and wife of Surya in his form as Vivasvant. They symbolise the shining of sunrise and sunset, appearing in the sky before the dawn in a golden chariot, bringing treasures to men and averting misfortune and sickness. They are the doctors of gods and are devas of Ayurvedic medicine. They are represented as humans with head of a horse. In the epic Mahabharata, King Pandu's wife Madri is granted a son by each Ashvin and bears the twins Nakula and Sahadeva who, along with the sons of Kunti, are known as the Pandavas.their marraige is example of polyandry in rigvedic time.