Caroline Esmeralda van der Leeuw (born 26 April 1981) is a Dutch pop and jazz singer. She debuted under the stage name "Caro Emerald" in July 2009 with "Back It Up". Follow-up single "A Night Like This" reached #1 in the Netherlands. Emerald is often praised for her outstanding live performances. She predominantly performs in English mixed in with her own made up language, as demonstrated in her hit "Back It Up".

Debut album Deleted Scenes from the Cutting Room Floor was conceived of, written and produced as a studio project by David Schreurs, Vincent Degiorgio, Jan van Wieringen and van der Leeuw, with Caro as the starring artist. In August 2010, the album spent its 30th week at #1 in the Dutch album charts, setting an all-time record and beating Michael Jackson's "Thriller" by one week. The album became the biggest selling album of 2010 in the Netherlands with over 350.000 copies to date. Worldwide, over 1.4 million copies have been sold. On 3 October 2010, Emerald was awarded the Dutch music prize "Edison Award" for Best Female Artist.

May 2013, a second studio album The Shocking Miss Emerald was released. The album entered at #1 in the UK album chart.