Rie Kitahara (Kitahara Rie, born June 24, 1991) is a Japanese singer and actress associated with the Japanese idol girl group NGT48 and former member of AKB48 and SKE48. She debuted in 2008 in Team A and was latter co-captain of Team K (2014). In March 2015, it was announced Kitahara would be transferred to NGT48 as captain of the group. She has sung on many of the groups' main singles, having been voted number 13, 16, 13, 13, 21, 19, 11 and 12 in AKB48's General Elections. In 2017, for her final participation, she was voted number 10 which is her best rank ever. Since 2011, Kitahara is also a member of the AKB48 subgroup Not Yet.

Having returned from "The great horse glue factory in the sky", Rie 'Kitarie' Kitahara is now back and twice as mean.