Rini Wulandari (born April 28, 1990 in Medan, North Sumatra) is an Indonesian pop singer. On July 28, 2007, she won the fourth season of the reality television Indonesian Idol, making her the second female winner. At 17, she is also the youngest winner in Indonesian Idol history.
Rini auditioned for Idol in her hometown of Medan on the second day auditions. On May 5, 2007, Rini made it into the top twelve of Indonesian Idol or also known Spectacular rounds. In the first spectacular round, she sang Warna's "50 Tahun Lagi". During the top 6 performances which was Percussion Night week, Rini sang a rendition of Gloria Estefan's "Conga" which garnered her a top 5 position. Other songs Rini performed on Indonesian Idol include Christina Aguilera's "Reflection", Mariah Carey's "Emotions", and Celine Dion's "Because You Loved Me". Rini made it to the finale and won the title over Wilson with 51.2% of the audience vote.