Harihara II ಹರಿಹರ ೨ (1377–1404 CE) was an emperor of the Vijayanagara Empire from the Sangama Dynasty. He patronised Kannada poet Madhura, a Jaina. An important work on Vedas was completed during his time. He earned the titles Vaidikamarga Sthapanacharya and Vedamarga Pravartaka.
During his reign, he continued to extend the kingdom's territory through fighting against the Reddis of Kondavidu for control of the Andhra between Nellore and Kalinga. From the Reddis of Kondavidu, Harihara II conquered the Addanki and Srisailam areas as well as most of the territory between the peninsula to the south of the river Krishna, which would eventually lead to fights in Telangana with the Velamas of Rachakonda. Harihara II took advantage of the death of Mujahid Bahmani in 1378 and extended his control into the northwest, controlling such ports as Goa, Chaul, and Dabhol.
Harihara II ruled from the capital Vijayanagara now more popularly known as Hampi. What is believed to be the ruins of Harihara’s palace is located among the Hampi ruins.
His general Iruguppa was a disciple of Simhanandi, a Jain teacher. He built a tank for Gomatteshvara (Bahubali) and the stone temple of Kumthu-Jinanatha at Vijayanagara.