Sita (Sanskrit: सीता; IAST: Sītā, Sanskrit pronunciation: [ˈsiːtaː]) is a Hindu goddess and the heroine of the Hindu epic, Ramayana, and its other versions. She is described as the daughter of Bhūmi (the earth) and the adopted daughter of King Janaka of Videha and his wife, Queen Sunayana. She has a younger sister, Urmila, and the female cousins Mandavi and Shrutakirti. Sita is known for her dedication, self-sacrifice, courage and purity.

Sita, in her youth, chooses Rama, the prince of Ayodhya as her husband in a swayamvara—bride choosing the best from a crowd of suitors after a contest, where Rama proves his heroism and valor and martial power and "defeats" the other seekers for Seeta's hand in marriage. After the swayamvara, she accompanies her husband to his kingdom, but later chooses to accompany her husband, along with her brother-in-law Lakshmana, in his exile. While in exile, the trio settles in the Dandaka forest from where she is abducted by Ravana, the Rakshasa king of Lanka. She is imprisoned in Ashoka Vatika in Lanka until she is rescued by Rama, who slays her captor. After the war, in some versions of the epic, Rama asks Sita to undergo Agni Pariksha (an ordeal of fire) by which she proves her purity before she is accepted by Rama, which for the first time makes his brother Lakshmana get angry at him.

In some versions of the epic, Maya Sita, an illusion created by Agni, takes Sita's place and is abducted by Ravana and suffers his captivity, while the real Sita hides in the fire. Some scriptures also mention her previous birth being Vedavati, a woman Ravana tries to molest. After proving her purity, Rama and Sita return to Ayodhya, where they are crowned as king and queen. One day a man questions Sita's purity and in order to prove her innocence and maintain his own and the kingdom's dignity, Rama sends Sita into the forest near the sage Valmiki's ashram. Years later, Sita returns to the womb of her mother, the Earth, for release from a cruel world as a testimony of her purity after she reunites her two sons Kusha and Lava with their father Rama.