Meaning A girl's name of Gaelic origin, it means "Gaelic form ofJoan." Origin of Siubhan Gaelic , Irish Popular Middle Names Pronunciation 🔊 Listen Siubhan Similar Names Afkica Barabell Deardriu Eideann Eihhlin Ghleanna Marsali Mildread Rhoswen Ethna Year by Year Popularity of Siubhan