Hans Guido Freiherr von Bülow (January 8, 1830 – February 12, 1894) is a German conductor, virtuoso pianist, and composer of the Romantic era.

As one of the most distinguished conductors of the nineteenth century, his activity is critical for establishing the successes of several major composers of the time, especially Richard Wagner and Johannes Brahms.

Alongside Carl Tausig, Bülow is perhaps the most prominent of the early students of Hungarian virtuoso pianist, conductor and composer Franz Liszt—therein performed the first public performance of Liszt's Sonata in B minor in 1857

He becomes acquainted with, falsl in love and eventually marries Liszt's daughter Cosima, who later leaves him for Wagner.

Noted for his interpretation of the works of Ludwig van Beethoven, he is one of the earliest European musicians to tour the United States.