Duke Jian of Qi

{{distinguish|text=Jian, King of Qi (齊王建), the last king of Tian Qi, or Duke Jian of Qi (杞簡公), the last ruler of the Qi (杞) state in modern-day Henan}}

{{infobox royalty

|name = Duke Jian of Qi
齊簡公

|succession = Duke of Qi

|reign = 484–481 BC

|predecessor = Duke Dao

|successor = Duke Ping

|full name = Ancestral name: Jiāng (姜)
Clan name: Lǚ (呂)
Given name: Rén (壬)

|house = Jiang

|dynasty = Jiang Qi

|death_date = 481 BC

| posthumous name = Duke Jian (簡公)

| father = Duke Dao

}}

Duke Jian of Qi ({{zh|t=齊簡公|p=Qí Jiǎn Gōng}}), personal name Lü Ren, was duke of the Qi state from 484 BC to 481 BC.{{cite web |url=http://www.guoxue.com/shibu/24shi/shiji/sj_032.htm |script-title=zh:齐太公世家 |trans-title=House of Duke Tai of Qi |work=Records of the Grand Historian |author=Sima Qian |author-link=Sima Qian |language=Chinese |publisher=Guoxue.com |accessdate=14 May 2012}}{{cite book |title=Shiji (史记) |author=Han Zhaoqi (韩兆琦) |year=2010 |publisher=Zhonghua Book Company |location=Beijing |isbn=978-7-101-07272-3 |chapter=House of Duke Tai of Qi |language=Chinese |pages=2589–2597}}

Reign

Duke Jian succeeded his father, Duke Dao of Qi, who was killed in 485 BC after four years of reign. Duke Jian made his trusted official Kan Zhi (闞止), a native of the neighbouring State of Lu, his prime minister. In 481 BC Kan Zhi plotted to attack and expel the powerful Tian clan from Qi, but the Tians learned of his plan and staged a preemptive coup d'etat. Kan Zhi was killed first, and Duke Jian escaped the capital but was captured in Shuzhou (in present-day Teng County, Shandong) and killed on the 24th day of the fifth month.

Tian Heng, the leader of the Tian clan, subsequently installed Duke Jian's younger brother Ao on the throne, to be known as Duke Ping of Qi. From then on the dukes of Qi would be reduced to mere figureheads and the leaders of the Tian clan would be de facto rulers of Qi, and in 386 BC Tian He would formally become Duke of Qi, ending more than six centuries of rule by the House of Jiang.