Meaning A girl's name of Czech origin, it means "Variant of John In Roman mythology; Jana was the wife of Janus." Origin of Janny Czech , Slavic Popular Middle Names Pronunciation 🔊 Listen Janny Similar Names Janalyn Janalynn Janica Janceena Jannalee Lavena Lavina Janalee Jania Evie Mae Year by Year Popularity of Janny