Step 1: Recall the origin of the epic.
The Ramayana is one of the two great epics of ancient India, telling the story of Lord Rama, his exile, and his battle against Ravana.
Step 2: Identify the author.
The original Sanskrit version of the Ramayana is credited to Maharishi Valmiki, who is often called the first poet, or Adi Kavi, in Indian tradition.
Step 3: Note later versions.
Many regional retellings exist, such as Tulsidas's Ramcharitmanas in Awadhi, but the earliest and foundational Sanskrit text is Valmiki's work.
Final Answer: Maharishi Valmiki.