From Brittany or Great Britain
A modern phonetic spelling of Brittany, referring to the region in northwest France settled by Britons. It gained popularity in the United States during the late 20th century as part of the trend for creative respellings of established names.
Less common today
Brittni isn't in the latest US Top 1000. It last peaked at #357 in 1990.
US births per 5-year period, 1990βpresent (SSA data).
Award-winning ukulele player and composer
Paralympic gold medalist sprinter