Vijaya Sena (Bengali: বিজয় সেন) (c 1095–1158 AD), also known as Vijay Sen in vernacular literature, was the son of Hemanta Sena, and succeeded him as a Sena dynasty ruler of Bengal region of the Indian subcontinent. This dynasty ruled for more than 200 years. He conquered Bengal, fighting the kings of Gauda, Kamarupa, and Kalinga. He had a capital in Vijayapuri and Vikramapura.
It appears from his records that he inherited the position of a subordinate ruler in Rarh under the Palas. He was possibly the same as Vijayraj of Nidravali, one of the fourteen Samanta kings who helped Ramapala in his recovery of Varendra.
Vijaya Sena took full advantage of the weakness of the Pala rulers. He obtained an independent position in Rarh in recognition of his help to Ramapala. He defeated the Palas and captured the throne of Gauda afterwards. His queen Vilasdevi was a princess of the Shur dynasty. Sandhyakar Nandi in his epic poem Ramacharitam attests to the existence of the Sur dynasty family in the southern Rarh in the first quarter of the 11th century. The same source, however, records the name of Lakshmishura, the lord of the Apara-Mandara (identified with Mandaran in the Hughli district) in the list of vassal chiefs who helped Ramapala. Vijaya Sena's matrimonial relation with the Sur family helped him in establishing his power in Rarh. He is also said to have entered into an alliance with the Orissan king, Anantavarman Chorganga. This alliance certainly enhanced his political prestige. He is described as Chorganga-Sakha (friend of Chorganga) in the Ballalcharita of Anandabhatta.
It is beyond any doubt that Vijaya Sena established independent power in Bengal immediately after the demise of Ramapala. The Deopara Prashasti records that he defeated Nanya, Vir, Raghav and Vardhan. He vanquished the kings of Kamarupa and Kalinga. He also compelled the king of Gauda to flee away from his kingdom. It is not very difficult to identify the rivals of Vijaya Sena. Nanya can be identified with King Nanyadev (c 1097–1147 AD) of Mithila, another Karnat chief. Vir was perhaps Virgun, ruler of Kotatavi, a member of Rampala's samantachakra. Vardhan may be identified either with Dorpavardhan, ruler of Kausambi, or with Govardhan against whom Madanapala won a victory. Vijaya Sena's fight against Vir and Vardhan were perhaps meant to bring under control two other feudatory chiefs who also might have aspired for power. Raghav was no other than the king of Kalinga. He can be identified with Raghav, son of Chorganga who ruled Orissa from c 1157–1170 AD. The encounter between Vijaya Sena and Raghav probably took place towards the end of the former's reign. It is not unlikely that Vijaya Sena had to wage war against Raghav, although he maintained a friendly relation with Anantavarman Chorganga. Vijaya Sena's fight against Raghav was meant to frustrate the latter's aggressive designs. The reference in the Deopara prashasti to the fight between Vijaya Sena and the king of Kamrupa does not necessarily mean that the former invaded the province, although that is not impossible altogether. The king of Kamrupa, defeated by Vijaya Sena, was perhaps Vaidyadev, the minister of Kumarapala who declared independence, or his successor. It is not unlikely that Vaidyadev or his successor invaded the newly founded dominions of the Sens and was driven away by Vijaya Sena.