鲁武公，姬姓，名敖，西周鲁国第九任君主。他为鲁真公的弟弟，承袭鲁真公担任该国君主，《史记·鲁世家》记载在位9年，年表记载在位10年。

鲁武公九年春季，他和长子太子括，少子公子戏（也就是后来的鲁懿公）前去朝见周宣王。周宣王喜欢公子戏，打算立他为鲁国的太子。樊仲山父力谏周宣王，周王不听，册立戏为鲁国太子。夏季，鲁武公与两儿子归国，不久去世。

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Duke Wu of Lu was a ruler of the State of Lu during the Western Zhou Dynasty. His ancestral name was Ji, and given name Ao. He succeeded his brother, Duke Shen of Lu, as the ninth ruler of Lu.

In spring of the ninth year of his reign, he paid a visit to King Xuan of Zhou with his heir apparent Kuo and younger son, Xi. King Xuan appreciated Xi greatly, and despite the objections of his councillor Zhongshan Fu, he decided to intervene and appoint Xi as the heir apparent over his elder brother. In summer, the three returned to Lu, and Duke Wu died shortly after.