Miss Platnum, formerly known as Platnum, is a Romanian singer, songwriter and musician, currently signed to Four Music.

Platnum (Ruth Maria Renner) was born in Timişoara, Romania in 1981. At the age of eight her family relocated to Berlin where she went to school in Berlin-Lichterfelde. Later on she took lessons in singing with Jocelyn B. Smith and worked as a background singer for Moabeat.

After her minor successful debut album Rock Me which was released in January 31st 2005 on the Berlin-based Indie label Sonar Kollektiv Platnum released her second album Chefa in May 2007, under her new artist name Miss Platnum. Through a mixture of Hip-Hop, Soul, R&B, Pop and Romanian Musical elements it distinguished itself, it was produced by Die Krauts. Its lead single, "Give Me the Food" reached the top 20 of the Romanian single charts, and made her chart debut with a position of 63 on the German Media Control chart.