Enwau cyfystyr ar gyfer Janička mewn gwahanol wledydd ac ieithoedd: Chevonne, Gianna, Giovanna, Ioana, Ioanna, Iohanna, Ivana, Jana, Jane, Janessa, Janice, Janina, Janka, Janna, Janneke, Jannicke, Jannike, Jantine, Jantje, Jean, Jeanne, Jehanne, Joan, Joana, Joanna, Johanna, Johanne, Johna, Johnna, Jone, Jóhanna, Jóna, Jovana, Juana, Lashawn, Seona, Seonag, Shan, Shauna, Shavonne, Shawna, Sheena, Sheona, Shevaun, Shevon, Shona, Siân, Sìne, Síne, Siobhán, Siwan, Xoana, Yana, Yanka, Yanna, Yoana, Zhanna. Cael Janička mewn ieithoedd eraill.
Mae'r rhan fwyaf o'r enwau cyffredin gyda cyfenw Mceniry: Geoffrey, Angelo, Michael, Joey, Penelope, Michaël, Pénélope. Cael Enwau sy'n mynd gyda Mceniry.