The lines "Whose woods these are I think I know" are the opening of the poem Stopping by Woods on a Snowy Evening by Robert Frost. In this poem, the speaker reflects on the owner of the woods he is pausing to watch fill up with snow. He believes he knows whose woods they are, noting that the owner’s house is in the village, so the owner will not see him stopping there

. Thus, the woods belong to a person who lives in the nearby village, but the poem does not specify the owner's name or identity beyond this. The focus is more on the speaker’s quiet moment of contemplation in the woods rather than on the owner themselves