Desja is of American origin, derived from the Spanish 'Dezsha', which itself is a variant of 'Diana'. It means 'divine' or 'heavenly'. The name Desja gained popularity in the United States during the late 20th century but remains relatively uncommon today.
"Desja was a popular baby girl name from 1995 to 1997, with seven births each year, but its popularity declined by the year 2000 with only five births recorded."