Brann is an uncommon and unique given name of Irish origin, derived from the Irish surname Ó Branáin which means 'descendant of Bran'. It is associated with the legendary hero Bran Mac Máalem, known for his wisdom and strength in Irish mythology. The name Brann is often spelled with one 'n' but can also appear as Brannon or Brannen. It has been used more frequently as a boy's name but is sometimes given to girls as well.
"The name Brann experienced a resurgence in popularity during the late 2010s, with six births each recorded in both 2013 and 2016. However, it still remains relatively uncommon, as seen by the total of just twenty-two babies named Brann born between 1971 and 2017."