The poetic voice narrating the sonnet, typically interpreted as the author. He observes the natural cycle of life and expresses deep concern regarding the preservation of beauty against the ravages of time. He actively campaigns for procreation, using metaphors of roses and food to persuade his subject to reproduce.

A physically attractive youth in the prime of his life, functioning as a fresh ornament for the world. He refuses to seek a marriage partner or produce heirs, preferring to focus entirely on himself. This vanity puts him at risk of wasting his genetic legacy and dying without leaving a trace.

The unidentified dedicatee described as the only begetter of the sonnets. His initials mask his true identity, leaving his exact historical relationship to the author unconfirmed. Proposals for his real identity range from aristocratic patrons to the poet himself.

Another addressee in the larger collection of poems, contrasting directly with the bright youth. She features dark eyes, hair, and skin, creating a distinct physical presence and a different power dynamic with the narrator.