魯國
(?
前509年～
前495年)
魯定公，即
姬宋，為春秋諸侯國魯國君主之一，是魯國第二十五任君主。他為魯昭公兒子，承襲魯昭公擔任該國君主，在位15年。 《東周列國志》稱昭公死後季孫意如廢黜其嫡子姬衍和姬務人而立其庶子，是為定公。
Luding Gong, that Ji Sung, the country for the Spring and Autumn of Lu Guojun Lord, is the 25th ruler of Lu. He Lu Zhaogong son, inherited Luzhao Gong as the monarch, reigned 15 years. "East Zhou," said Zhao Gong means, such as deposed after the death of Ji Sun Ji Di Zi Yan and Ji its service people standing the Bastard, is to be public.