Yajna Sri Satakarni was an Indian ruler of the Satavahana

Satavahana

The Sātavāhana Empire or Andhra Empire, was a royal Indian dynasty based from Dharanikota and Amaravati in Andhra Pradesh as well as Junnar and Prathisthan in Maharashtra. The territory of the empire covered much of India from 230 BCE onward...

 dynasty, who ruled between 167 and 196. During his reign, he regained some of the territory lost to Shakas under Vashishtiputra Satakarni

Vashishtiputra Satakarni

Vashishtiputra Sātakarni , was a Satavahana king in Central India, who ruled during the 2nd century century CE. He was the brother of Vasisthiputra Sri Pulamavi Vashishtiputra Sātakarni (r. 130-160 CE), was a Satavahana king in Central India, who ruled during the 2nd century century CE. He was the...

. He is considered to be the last great king of the Satavahana Dynasty.

He is known from his coins, and from the mention of his name in the regnal lists of the Matsya Purana

Matsya Purana

Matsya Purana is the sixteenth purana of the Hindu scriptures. During the period of mahapralaya, Lord Vishnu had taken Matsya Avatar to save the seeds of all lives and Manu...

, in which he is said to have ruled 29 years.

Victory over the Shakas

The last great king of this dynasty, Yajna Sri Satakarni, defeated the Western Satraps and reconquered their southern regions in western and central India.