《飞龙**》（Eragon），又译《伊拉龙》、《爱尔江》，是《遗产四部曲》（Inheritance cycle）的第一部。《龙骑士》是由当时才15岁，刚完成高中的美国少年克里斯托弗·鲍里尼（Christopher Paolini）所着，一个有关少年与龙的童话幻想故事。最初由他父母的出版公司出版，然后被诺普夫（Alfred A. Knopf）发掘，并在2002年以诺普夫名下再版，一炮而红，进占《纽约时报畅销书榜》长达87星期。

此书被改编为电影，**在2006年12月15日公映，并因此出了以电影主角为封面的新封面版本。

Eragon is the first novel in the Inheritance Cycle by Christopher Paolini, who began writing at the age of 15. After writing the first draft for a year, Paolini spent a second year rewriting and fleshing out the story and characters. Paolini's parents saw the final manuscript and decided to self-publish Eragon. Paolini spent a year traveling around the United States promoting the novel. By chance, the book was discovered by Carl Hiaasen, who got it re-published by Alfred A. Knopf. The re-published version was released on August 26, 2003.