Bengali mythology in a literal sense has been indistinguishable from Indian mythology

Indian mythology

Indian mythology may refer to:*Indian epic poetry*Vedic mythology*Hindu mythology*Buddhist mythology*Native American mythology...

. It can refer to the historical legends and folk tales of West Bengal

West Bengal

West Bengal is a state in the eastern region of India and is the nation's fourth-most populous. It is also the seventh-most populous sub-national entity in the world, with over 91 million inhabitants. A major agricultural producer, West Bengal is the sixth-largest contributor to India's GDP...

 and Bangladesh

Bangladesh

Bangladesh , officially the People's Republic of Bangladesh is a sovereign state located in South Asia. It is bordered by India on all sides except for a small border with Burma to the far southeast and by the Bay of Bengal to the south...

. Given the historical Hindu and Buddhist presence in the region, characters from Vedic and Hindu mythology are present within Bengali literature. Later Islamic settlement has introduced legendary traits that ultimately draw from Middle Eastern inspirations. Such an example of the Vedic and Islamic legend transaction would be the progenitor of Bengalis known as Bonga, Hindu literature credits him as an ancient Hindu Prince Vanga, adopted son of King Vali. Muslim accounts however refer him as Bong, son of Hind who was the grandson of Noah.

Spiritual life of Bengal

Bengal is known for giving to the world great knowledge about Spiritual and material worlds. Scriptures like Caitanya Caritamrita explain in great details structure of both spiritual and material worlds. It more than just mythology, because it deals with bhakti - eternal relationship of soul, jivaatma with Supersoul, Vishnu, Krsna. Thus we know so many extraordinary narrations about other planes of existence - demigods on higher planets, about Vishnu and His countless avataras. See also: Chaitanya