Sinthia is a female name with English origins. It is pronounced as SIN-thee-uh (/sɪnˈθiə/). This name also has a variation, Cynthia. Sinthia is a relatively uncommon name in the United States, with only 6 occurrences in 2021 and ranking at number 13,431. However, it has had fluctuating popularity over the years, reaching its peak in 2009 when it ranked at number 5 with 17,280 occurrences. Sinthia is associated with qualities such as strength, beauty, and intelligence. It is a timeless and elegant choice for parents looking for a unique name for their baby girl.