莪相（Ossian）是传说中3世纪时爱尔兰英雄，吟游诗人。

Ossian (/ˈɒʃən, ˈɒsiən/; Irish Gaelic/Scottish Gaelic: Oisean) is the narrator and purported author of a cycle of epic poems published by the Scottish poet James Macpherson from 1760. Macpherson claimed to have collected word-of-mouth material in Gaelic, said to be from ancient sources, and that the work was his translation of that material. Ossian is based on Oisín, son of Finn or Fionn mac Cumhaill, anglicised to Finn McCool, a legendary bard who is a character in Irish mythology. Contemporary critics were divided in their view of the work's authenticity, but the consensus since is that Macpherson framed the poems himself, based on old folk tales he had collected, and that "Ossian" is, in the words of Thomas Curley, "the most successful literary falsehood in modern history."