The manufacturing sector in Korea had a more severe fall in labor productivity during the global financial crisis than most OECD countries. As a result, the manufacturing sector in Korea is in danger of becoming less competitive. Additionally, due to the Fourth Industrial Revolution and the advancement of intelligent technology, several forms of corporate innovation are becoming more significant. The assessment is that, in light of the alterations in the external milieu and the circumstances confronting the Korean manufacturing sector, domestic manufacturing enterprises must fortify their entrepreneurial orientation and enhance their capacity for innovation to augment the efficacy of their innovation endeavors. As a result, this study looked at the relationship between entrepreneurial orientation and product innovation and considered business process innovation as a multifaceted innovation skill. This study's empirical testing used the Science and Technology Policy Institute's 2020 Korean Innovation Survey data on manufacturing industries. It was discovered that, as a result of business process innovation, entrepreneurial attitude positively impacted product innovation. Furthermore, incremental product innovation was positively impacted by entrepreneurial attitude, whereas radical product innovation was negatively impacted.