Kaja uiga igoa sili: Agavaa, Foafoa, Gauai, Fiafia, Matuia. Aumai Kaja uiga o le suafa.
Kaja amataga o le igoa muamua. Scandinavian diminutive of Katarina. Aumai Kaja amataga o le igoa muamua.
E tusitusiga po o le auala e faalauiloa le igoa muamua Kaja: KAH-yah (i Swedish, i Estonian). E faapefea e faalauiloa Kaja.
Igoa tutusa mo Kaja i atunuu ma gagana eseese: Aikaterine, Cătălina, Cadi, Caelie, Caileigh, Cailin, Cailyn, Cáit, Caitlín, Caitlin, Caitria, Caitrìona, Caitríona, Caleigh, Caren, Carina, Carine, Caryn, Catalina, Catarina, Cate, Cateline, Caterina, Catharina, Catharine, Catherin, Catherina, Catherine, Cathleen, Cathrin, Cathryn, Cathy, Cátia, Catina, Cato, Catrin, Catrina, Catriona, Cayley, Ecaterina, Eka, Ekaterina, Ekaterine, Iina, Ina, Jekaterina, Kaarina, Käthe, Kae, Kaelea, Kaelee, Kaelyn, Kaety, Kaija, Kailee, Kailey, Kailyn, Kaisa, Kakalina, Kaleigh, Kalena, Kaley, Kalie, Kalyn, Karen, Karena, Karin, Karina, Karine, Karyn, Kasia, Kat, Kata, Katalin, Katalinka, Katarína, Katariina, Katarin, Katarina, Katarine, Katarzyna, Kate, Katee, Katelijn, Katelijne, Katell, Katenka, Kateri, Katerina, Kateřina, Kateryna, Katey, Katharina, Katharine, Katharyn, Katherina, Katherine, Katheryn, Katheryne, Kathi, Kathie, Kathleen, Kathrin, Kathryn, Kathy, Kati, Katia, Katica, Katie, Katina, Katinka, Katja, Katka, Kató, Katrė, Katri, Katrien, Katrín, Katriina, Katrijn, Katrin, Katrina, Katriona, Katsiaryna, Kattalin, Katy, Katya, Kay, Kaye, Kayla, Kayleah, Kaylee, Kayleen, Kayleigh, Kayley, Kaylie, Kaylin, Kayly, Kaylyn, Kaylynn, Keighley, Kerena, Kit, Kitti, Kitty, Kotryna, Nienke, Nine, Nynke, Riina, Rina, Rini, Riny, Ríona, Tina, Tineke, Trijntje, Trina, Yekaterina. Aumai Kaja i isi gagana.
Surnames taatele ma igoa Kaja: Radzewicz, Kaja, Smrekar, Sotlar. Aumai Lisi o surnames ma igoa Kaja.
O le tele o igoa tutusa ai ma faaiu Boston: Gwenda, Mervin, Kirby, Kathaleen, John. Aumai Igoa e aumai faatasi Boston.