It is considered bad to compare the deities with each other. Each Hindu deity has its powers and is great in its field. Still, it would be interesting to know who is the most powerful deity in Hinduism.

There are three main deities in Hinduism viz. Brahma, Vishnu, and Shiva. These three deities are considered as powerful than all other deities. Hence, Lord Dattatreya, who is also known as Trinity and is a combination of those three deities, is termed as the most powerful deity according to Hindu mythology.

But in Bhagavad-Gita, Lord Krishna says that he is the most powerful of all and you do not need to worship other deities. Vaishnavaites believe that Lord Krishna is the incarnation of Parmeshwar i.e., Almighty or Om. Bhagavad-Gita is the extract of Vedas and all other Hindu scriptures and is the most popular of all. Therefore, we can say that Lord Krishna is the most powerful deity in Hinduism.