According to the Bible, Adam was the first man on Earth and he is known as the father of humanity. Studies show that it is possible that Adam lived about 14,000 to 15,000 years ago, but no one knows for sure. In the book of Genesis, God speaks of creating Adam on the 6th day. He was created in God's image and had control over all of the plants and animals in the world. God gives Adam a female partner named Eve. The two do ok together until the eat fruit from the forbidden tree. God gets angry that they have disobeyed him and ate from this forbidden tree, so he expels them from the Garden of Eden. Adam and Eve had three sons named Cain, Able, and Seth. Therefore, it is not really known who exactly was the first man on Earth, but according to the Bible, it was Adam.
In the Bhagwad Gita it is mentioned that MANU was the first man on earth. MANU had come from the creation of Brahama, Vishnu and Mahesh That is from the three important gods of hindu mythology. MANU then brought the humans