The nickname or the pen name is like the identity or even signature of the poet in Turkish Literature. For this reason, when choosing the pseudonym, they used names and adjectives compatible with the real name, lineage, profession, social status, physical feature, country, psychological condition, a person taken as an example, or the poem that they said. In our literature, poets generally preferred nicknames that were not used in their own age. Sometimes there have been poets who used the same pen name for various reasons. However, this situation caused the poets and their poems to be mixed together in time. Because poets are known especially for their poems and works, they are generally known with their pseudonyms even in their own ages. For this reason, their real names have often remained in the background or even been forgotten over time. The pen name Hâdî is one of them. Especially in the century of 16th and 17th we noticed that the number of poets who used the pseudonym Hâdî were quite high compared to other centuries. We saw that these poets, who used the same pseudonym, were confused with each other and given wrong information about them, in the same century. Therefore, we tried to introduce Hâdî pseudonym poets primarily who lived in the 16th and 17th century and their works.