Keitorin Share definition Flag Keitorin is Japanese Romaji for the English name "Caitlyn," "Kaitlyn," "Katelyn," "Caitlin,"In Kanji it is "ケイトリン" Girl: Minasan, Konnichiwa! Keitorin Desu Keitorin by KeitorinDesu August 17, 2010 Get the Keitorin mug.