The given name Dajuan is derived from the Spanish name Juan, which itself is a form of the Hebrew name Yohanan, meaning "Graced by God" or "Yahweh is gracious". Juan became a popular name throughout the Spanish-speaking world during the Middle Ages, particularly in Spain and Latin America.

The prefix "Da" in Dajuan is likely a remnant of the Spanish article "de", which was sometimes added to names to denote origin or lineage. Thus, Dajuan may have initially referred to someone named Juan who hailed from a particular place or family line.

One of the earliest recorded instances of the name Dajuan can be found in the 16th-century Spanish colonial records of Mexico, where it appears as a first name given to Indigenous people who converted to Christianity. This suggests that the name may have been used as a way to integrate newly converted individuals into Hispanic culture and society.

Throughout history, a few notable individuals have borne the name Dajuan. One example is Dajuan Wagner, an American professional basketball player who was born in 1983 and played in the NBA for several teams, including the Cleveland Cavaliers and the Golden State Warriors.

Another individual named Dajuan is Dajuan Eubanks, an American entrepreneur and founder of the successful real estate investment company Eubane Properties, which was established in the early 2000s.

In the world of music, Dajuan Marquise Sears, better known by his stage name DajuanGee, is a contemporary rapper and songwriter from Detroit, Michigan, who has released several albums and collaborations since the late 2010s.

The name Dajuan also appears in historical records from the Caribbean, where it was likely introduced by Spanish colonizers and subsequently adopted by local populations. One such individual was Dajuan Rodríguez, a prominent Cuban baseball player who played in the Negro Leagues during the 1920s and 1930s.

Finally, Dajuan Hawkins was an African American activist and community organizer from Chicago, Illinois, who was involved in various social justice movements during the latter half of the 20th century, working to address issues such as poverty, education, and racial inequality.