William Mathias (November 1, 1934 — July 29, 1992) was a Welsh composer.

List of works

Festival Te Deum in C Major
Bell Carol
Sweet was the Song
A Babe is Born" Opus 55 (1971) 3:30 duration
Ave Rex" Opus 45
Ceremony after a Fire Raid
A May Magnificat
Jonah
Learsongs
Lux Aeterna
Riddles
A Royal Garland
Shakespeare Songs
This Worlde's Joie
Three Medieval Lyrics
Sir Christemas Choral Works

The Servants (1980) Opera

Divertimento for String Orchestra, Op.7 (1958)
Dance Overture, Op.16 (1961)
Invocation and Dance, Op.17 (1961)
Serenade for Small Orchestra, Op.18 (1963)
Prelude, Aria and Finale for String Orchestra, Op.25 (1964)
Sinfonietta, Op.34 (1967)
Harp Concerto (1970)
Celtic Dances, Op.60 (1972)
Laudi, Op.62 (1973)
Vistas, Op.69 (1975)
Symphony No. 2, Op.90 (Summer Music)
Symphony No. 3 (1991) Orchestral Works

Zodiac Trio for Flute, Viola and Harp (1976)
Wind Quintet op. 22 (1963) Solo instrumental

Antiphonies
Berceuse
Carillon
Canzonetta Opus 78, No. 2
Chorale (Easter 1966)
Fanfare
Fantasy for Organ
Fenestra
Invocations
Jubilate Opus 67, No. 2 Dedicated to Michael Smythe
Partita
Postlude (1962)
Processional Opus 96, No. 4. Dedicated to Christopher Morris, musician, publisher, friend
Recessional (1964)
Toccata GiocosaOpus 36, No. 2 Dedicated to Sir. David Willcocks on the occasion of his Inauguration of the new organ at The Royal College of Organists, 7th October, 1967
Variations on a Hymn Tune