Ernst Ragnar Johansson, professionally known as Ernst Rolf was a Swedish actor, singer and composer and musical revue artist. Rolf was born in Falun in the Swedish province of Dalarna, where his father was a tailor and member of the temperance movement. His musical talent was evident from the start when even as a young child he performed at IOGT meetings. He would sing while his older brother Birger played the piano.

Falun is a city and the seat of Falun Municipality in Dalarna County, Sweden, with 37,291 inhabitants in 2010. It is also the capital of Dalarna County. Falun forms, together with Borlänge, a metropolitan area with just over 100,000 inhabitants.