Ibolya Oláh is a Hungarian pop singer. She was the runner-up of the first series of Hungarian television singing competition series Megasztár.
Ibolya is of Romani ancestry. She was born in Nyíregyháza and grew up in an orphanage in Tiszadob, where she studied vegetable gardening. She briefly attended a music school in Budapest but did not finish it. She learned to sing and to play the guitar mostly by herself. After a few unsuccessful entries at talent contests, she entered the talent show Megasztár and came second after Vera Tóth. Her debut album, released in 2004, reached No. 1 on the Hungarian album chart and stayed on the chart for 41 weeks. Her second album, released in the following year, was No.2 and her third album No. 4.
Her main influences are Linda Perry, Alanis Morissette, Pink, Ildikó Keresztes, Guns N' Roses, Rolling Stones, Aerosmith, and Queen.
In November 2011 she was outed as a lesbian by the tabloid Blikk.
In 2014, she competed in the Hungarian national final of the Eurovision Song Contest, in A Dal 2014, with her entry "1 percig sztár" where she advanced through the first heat but was eliminated in the semi-finals.