Ludwig Ernstsson (born 29 April 1972) is a retired Swedish football striker. He grew up in both and , since his parents were separated. He joined Östers IF, made his senior debut in 1992 and joined Kongsvinger IL in 1997. Here he scored ten Norwegian Premier League goals in 1997 and 1998. In the middle of the season he left Kongsvinger for Austria Wien. He stayed here until 2000, when he returned to Öster.