Sian \sian\ as a girl's name is pronounced shaahn. It is of Welsh origin. Variant of Jane (Hebrew) "God's grace". See also Seana, Shana, Shanae, and Shawna. Actress Sian Phillips.
Sian has 2 variant forms: Siana and Sianna.
For more information, see also the related name Shan.
Baby names that sound like Sian are San and Sean.
View a list of the 4 names that reference Sian.
Sian is not a popular first name for women and an equally uncommon surname or last name for both men and women. (1990 U.S. Census)