| Yamana Toyokuni | |
| Native Name: | 山名 豊国 |
| Birth Date: | 1548 |
| Death Date: | 25 November 1626 |
| Birth Place: | Tajima Province |
| Relations: | Yamana Toyosada (father), Yamana Suketoyo (father-in-law) |
| Rank: | Daimyō |
| Commands: | Iwai Castle, Tottori Castle |
| Battles: | Siege of Tottori Battle of Sekigahara |
was a Japanese samurai and commander of the Sengoku period. He was the head of the Inaba Yamana clan and Shugo of the Inaba.[1] [2] [3]
In 1574, Toyokuni allied with Amago Katsuhisa for an attempted invasion to capture Tajima and Inaba provinces. [1] [4]
In 1581, his Tottori Castle was besieged by the Oda Nobunaga's army led Hashiba Hideyoshi.[3] After three months of the Siege, Toyokuni surrendered.[3] Thereafter, he became a masterless samurai for a while.[3]
In 1600, at the Battle of Sekigahara, he joined the Western army and after the battle he was given small territory in the Tajima Province by Tokugawa Ieyasu.[3] [5] [6]