The playwright who wrote tragedies such as "Romeo and Juliet," "Macbeth," and "Hamlet" is William Shakespeare. Shakespeare is widely regarded as one of the greatest playwrights in the English language and is often referred to as the Bard of Avon. His works encompass a wide range of genres, but he is particularly famous for his tragedies, which delve into themes of love, power, ambition, and human nature. "Romeo and Juliet," "Macbeth," and "Hamlet" are among his most well-known and frequently performed plays, showcasing his unparalleled storytelling, character development, and poetic language.