- Lonely Child (1980)soprano and small ensemble
- The Long and the Short of It (2008)cello, 2 electronic controllers and system
- Looking into Clouds (2003)chimes
- Lookout (1989)flute
- Lorraine (1983)horn and fixed medium
- Lost Lands (1977)soprano saxophone, E-flat clarinet, guitar, piano and violin
- Lost voices (2008), 1:00installationfixed medium
- Loud Speakers (1999), 7:00saxophone quartet (two tenor, and two baritone)
- The Loudest Tone (2022), 15:00
- Louné (2018)
- Love Songs (1977)7 voices
- Love Songs (2008), 40:00female voice
- Love Songs Opéra (2008), 40:00Arr. Ana Sokolović, 2017 [original work]female voice and saxophone
- Loving (Toi) (1963-66), 70:00music theatresoprano, 3 mezzo-sopranos, 2 spoken voices, guitar, mandolin, harp, piano, 6 percussions, 2 violins, viola, cello and double bass
- soprano, piano (celesta), 6 percussions, double bass and fixed medium
- Lowrider, 1:00pianoCycle: One Minute More
- Loyang (1962)flute, oboe, clarinet, bassoon, harp, percussion, violin and cello
- LoYeshvu (They Shall Not Remain) (2005-06, 15-16)Cycle: Mishpatim (Laws)
- Løp, Lokk og Linjar (2001-02)female folk singer and 16 musicians
- Ludions (1923)
- Ludus (1980), 12:004 percussions
- Ludus II (1973)flute, clarinet, piano, violin and cello
- Lullaby (1991), 19:006 string instruments
- Lullaby, 1:00pianoCycle: One Minute More
- Lulu, le chant souterrain (2000)soprano, actor and fixed medium
- Lume (1998)string quartet and oboe
- Lumière ralentie (1983), 21:39Cycle: Son Vitesse-lumière
- Lumières sculptées (1992), 12:002 horns, 2 trumpets, 2 trombones, tuba and 3 percussions
- Luminescence (2005), 40:002 pianos
