| Conflict: | Siege of Odani |
| Partof: | the Sengoku period |
| Date: | October, 1573 |
| Place: | Odani Castle, Ōmi Province |
| Result: |
|
| Combatant1: | forces of Oda Nobunaga |
| Combatant2: | forces of Azai Nagamasa |
| Commander1: | Oda Nobunaga Oda Nobutada Gamō Ujisato Isono Kazumasa Miyabe Keijun |
| Commander2: | Azai Nagamasa Akao Kiyotsuna Kaihō Tsunachika Amenomori Kiyosada Atsuji Sadayuki |
| Strength1: | 30,000 |
| Strength2: | 5,000 |
The 1573 was the last stand of the Azai clan, one of Oda Nobunaga's chief opponents.[1] and the first battle of Oda Nobutada.
In September, 1573, Oda Nobunaga defeated the Asakura clan at the Siege of Ichijodani Castle. Later, the Oda forces returned to northern Ōmi, he took Sawayama Castle and on October, 1573, Nobunaga began attacking Odani Castle, devastating the Azai clan.
Nobunaga took Odani Castle from Azai Nagamasa, who, left with no other option, committed suicide along with his father. Azai knew from the beginning that he would lose the battle, so he gave his wife Oichi (Nobunaga's sister), and their three daughters back to Nobunaga, saving them from death.[2] Two of Nagamasa's daughters would later marry into powerful families. Their escape from the besieged castle became a fairly common sentimental scene in traditional Japanese art.
Before Azai Nagamasa committed seppuku he decided to make one last attack on Nobunaga's main camp; in the end, however, he failed and was instead captured. Nagamasa suffered much the same fate as his comrade-in-arms Asakura Yoshikage, whose castle at Oda Nobunaga's Siege of Ichijodani Castle was set aflame and destroyed.[3]
The battle has been featured in the game Samurai Warriors 2. In the game, however, both the Azai and Asakura clans are destroyed during the Odani siege. Historically, the Asakura clan was destroyed before the Azai at the Battle of Ichijodani.