Rubén González Fontanills (26 May 1919 – 8 December 2003) was a Cuban pianist. Together with Lilí Martínez and Peruchín he is said to have “forged the style of modern Cuban piano playing in the 1940s”.

Between the 1940s and his retirement in the 1980s, he played with Cuba’s most successful acts, including Paulina Álvarez, Arsenio Rodríguez, Orquesta América del 55, Orquesta Riverside and Enrique Jorrín. In the 1990s, he came out of retirement to play in the revival ensembles Afro-Cuban All Stars and Buena Vista Social Club, also recording solo material and performing live until 2002.

González was born in Santa Clara, Cuba, on 26 May 1919. His family moved to the small village of Encrucijada when he was 6 years old. He took up the piano at age seven and graduated from the Cienfuegos Conservatory at age 15.

He grew up wanting to be a doctor and studied medicine, thinking music would remain a hobby he could pursue by night. However, he abandoned his studies after four years because music was “in his blood” and also because of all the encouragement he received from people around him.