Lambertus Reiner "Reinbert" de Leeuw (8 September 1938 – 14 February 2020) was a Dutch conductor, pianist and composer.
1969 , opera jointly composed with Louis Andriessen, Misha Mengelberg, Peter Schat and Jan van Vlijmen
1977 Axel, opera in 3 acts, jointly composed with Jan van Vlijmen
(1969, together with J. Bernlef)
