Moon goddess or woman from Kynthos
Sinthia is a rare phonetic variant of Cynthia. It originates from the Greek name Kynthia, which was an epithet for the moon goddess Artemis, referring to her birthplace on Mount Kynthos.
Fewer than 5 girls were named Sinthia in 2025.
US births per 5-year period, 1990–present (SSA data).
A character in the video game series Fire Emblem · Fire Emblem
A minor character in the Marvel Universe, also known as Sin · Marvel Comics