Osbert Parsley (1511–1585) was an English renaissance composer.

Osbert Parsley was born in 1511 and died in Norwich in 1585.  He was a ‘singing-child’ in Norwich Cathedral, and circa 1534 was appointed a ‘singing man’.
Parsley is first mentioned in the extant cathedral accounts for 1538–40 as a lay clerk, and he continues to appear in subsequent documentation until his death.
Spanning the Reformation, Parsley wrote church music for both Latin and English rites.  His Latin music is fluent and attractive, the expressive psalm Conserva me, Domine being especially noteworthy for its elegant polyphonic style.  His most famous work, the five-part Lamentations, differs from settings by his more famous contemporaries in the restricted compass of the top part.  Both psalm and lamentations were probably intended for domestic devotional use.  A well-crafted three-part canonic setting of Salvator Mundi, was printed by Thomas Morley in 1597. Morley described Parsley’s arrangement of this Gregorian hymn as a model of its kind, and alluded to him as ‘the most learned musician.’

Much of our knowledge of Parsley’s life comes from the text of a memorial stone to him in the North aisle of Norwich cathedral, a unique honour amongst lay singing men.

Musicae Scientissimo
Ei quondam Consociati
Musici posuerunt Anno 1585

Here lies the man whose Name in Spight of Death,
Renowned lives by Blast of Golden Fame:
Whose Harmony survives his vital Breath.
Whose Skill no Pride did spot whose Life no Blame.
Whose low Estate was blest with quiet Mind:
As our sweet Cords with Discords mixed be:
Whose life in Seventy and Four Years entwin’d,
As falleth mellowed Apples from the Tree.
Whose Deeds were Rules whose Words were Verity:
Who here a Singing-man did spend his Days.
Full Fifty Years in our Church Melody
His Memory shines bright whom thus we praise.