Luke is traditionally identified as the author of the Book of Acts in the New Testament. Acts continues the story begun in the Gospel of Luke, describing the growth of the early Christian movement after Jesus’s resurrection.
The two books form a connected work addressed to a person named Theophilus. Acts begins with Jesus’s ascension and follows figures including Peter, Stephen, and Paul. Its narrative moves from Jerusalem outward, eventually reaching Paul’s arrival in Rome. The book therefore links the earliest Jerusalem community with Christianity’s expansion across the eastern Mediterranean.
The author does not name himself directly. The attribution to Luke comes from early Christian tradition and from the close vocabulary, style, and themes shared by Luke and Acts. Luke is also traditionally described as a physician and a companion of Paul, although the text itself does not explicitly provide a full biography of its author.