Delmer Ferreira Jaines (born 24 July 1974), simply known as Delmer, is a Brazilian former professional footballer who played as a forward.
Forward, Delmer made history for Caxias, the club for which he played most of his career, and won the state championship in 2000, and for Criciúma, where he was Série B champion and top scorer in the state championship in 2003. He scored a total of 48 goals in 166 appearances for Criciúma and 85 goals in 274 appearances for Caxias. After retiring, he works in the textile sector in the city of Camaquã.