Jackin merkilegu heiti: Rokgjarnt, Gaum, Hæfur, Skapandi, Vingjarnlegur. Fá Jackin merking nafns.
Jackin Uppruni fornafns. Variant of Jankin. Fá Jackin Uppruni fornafns.
Samheiti fyrir Jackin í mismunandi löndum og tungumálum: Anže, Deshaun, Deshawn, Ean, Eoin, Evan, Ganix, Ghjuvan, Gian, Gianni, Giannis, Giovanni, Gjon, Hanke, Hanne, Hannes, Hannu, Hans, Hovhannes, Iain, Ian, Iefan, Ieuan, Ifan, Ioan, Ioane, Ioann, Ioannes, Ioannis, Iohannes, Ion, Iván, Ivan, Ivane, Ivano, Iwan, Jaan, Jānis, Jack, Jackie, Jake, Ján, Jancsi, Janek, Janez, Jani, Janika, Janko, Janne, Jannick, Jannik, Jan, János, Janusz, Jean, Jeannot, Jehan, Jehohanan, Jens, Jo, João, Joannes, Joan, Joãozinho, Joĉjo, Jock, Jockie, Jocky, Johan, Johanan, Johann, Johannes, Johano, John, Johnie, Johnnie, Johnny, Jón, Jonas, Jone, Joni, Jon, Jon, Jóannes, Jóhann, Jóhannes, Joop, Jouni, Jovan, Jowan, Juan, Juanito, Juha, Juhán, Juhan, Juhana, Juhani, Juho, Jukka, Jussi, Keoni, Keshaun, Keshawn, Rashaun, Rashawn, Seán, Sean, Seoc, Shane, Shaun, Shawn, Shayne, Siôn, Sjang, Sjeng, Vanni, Xoán, Xuan, Yahya, Yanick, Yann, Yanni, Yannic, Yannick, Yannis, Yehochanan, Yianni, Yiannis, Yoan, Yochanan, Yohanes, Yuhanna, Zuan, Žan. Fá Jackin á öðrum tungumálum.
Algengustu nöfnin með eftirnafninu Sine: Ansal, Ward, Jackie, Ena. Fá Nöfn sem fara með Sine.