Brandie is a female given name of unknown origin, perhaps derived from an Old Norse personal name brandi meaning 'sword'. It gained popularity in the United States during the mid-20th century and has since been used occasionally.
"Brandie saw a peak in popularity in the mid-70s with 10 births in 1975, followed by a dip to 6 births each in 1979 and 1985, then slightly recovered to 7 births in 1987. Over these years, there were a total of 29 babies named Brandie."