Meaning and name origin
Siana \sia-na\ as a girl's name is of English and Welsh origin. Siana is a variant of Shawna (English): feminine variant of Sean (Irish, Gaelic) "God's grace". Also a variant of Sian (Welsh): see also Seana, Shana, Shanae, and Shawna.
Siana is not a popular first name for females and an equally uncommon surname or last name for all people (2000 U.S. Census).
Siana is also pronounced similarly to Ciana, Cianna, Sana, Sanna, Sena▼, Siena, Sienna▲, Signa, Signy, Sina▼, Sinny, Zana and Zina. Other suggested similar baby names are Diana▲, Giana▼, Jiana, Kiana▼, Liana▲, Qiana, Riana, San, Sean, Shaena, Shaina▼, Shan, Shan-, Shana▼, Shanae▼, Shanah, Shanay, Shane, Shanea, Shani, Shania▼, Shanna▼, Shauna▼, Shayna▼, Shena, Shianna, Shiona, Shona, Shuna, Siara, Sima, Sine, Tiana▲ and Viana. These names tend to be more commonly used than Siana.