Nicomedes II was a king of Bithynia, a region in northwestern Asia Minor, who ruled from around 149 to 91 BCE. He was a member of the Nicomedes dynasty and is known for his efforts to strengthen his kingdom through alliances and military campaigns. His reign was marked by conflicts with neighboring territories, including Pontus. During his rule, Nicomedes II sought to expand Bithynia's influence and maintain stability in the region. He is also remembered for his relationship with the Roman Republic, which played a significant role in the politics of Asia Minor during this period. His legacy includes the eventual incorporation of Bithynia into the Roman Empire.