Paul Sophus Christian Henrik Rung-Keller or P. S. Rung-Keller (11 March 1879 – 22 March 1966) was a Danish organist and composer.
He was the son of lawyer Emil Keller and operatic soprano Sophie Keller; grandson of composer Henrik Rung.
He was a student of organist Thomas Laub (1852–1927).
[2] [3] He was employed as organist and cantor at the Church of Our Saviour (Danish: Vor Frelsers Kirke) from 1903 to 1949.
He was conductor of Cecilia Association (Caeciliaforening) of Copenhagen from 1912 to 1934, a post he took over after his uncle, composer Frederik Rung.