Speaker
The speaker of “Pied Beauty” isn’t present in the scene described in the way that, for example, the speaker of Wordsworth’s “Lines Composed a Few Miles above Tintern Abbey” is. But the first and last lines give the poem as a whole the character of a kind of prayer or invocation spoken by an individual. Thus, in relation to the poem, this speaker is somewhere in between the absent, omniscient poet-speaker, and a character within the scene(s) depicted in the text.
God
In “Pied Beauty,” God shares a similar kind of presence with the speaker: while not appearing in or acting within the text, the poem itself serves as evidence of God’s presence. This is, specifically, God the Creator, God as a kind of author of the natural world the poet encounters. In a way, God functions as the addressee of “Pied Beauty,” and there is a kind of implicit apostrophe in which we are meant to take the poem as a kind of praise directed towards God.