Hindus have many Gods and Goddesses. Vishnu, Shiva, Rama, Krishna, Buddha, Ganesha, Kartikeya, Hanuman are some of the Hindu Gods. Saraswati, Lakshmi, Parvati, Durga are some of the Goddesses.
The main God of a person would be one whom he/she chooses for worship.
Read more: A HINDU GOD