A variant of Cindy, from Cynthia, meaning "woman from Kynthos" and linked to Artemis.
Cindye is a variant of Cindy, which itself comes from Cynthia, the name associated with Artemis and the mountain Kynthos. That gives the name a mythological background that is easy to miss at first glance, because Cindy has long been used as a friendly diminutive.
The spelling change makes the name look more decorative and slightly more individualized. The appeal of Cindye is that it combines the sweetness of a familiar nickname with a visual flourish that makes it feel less ordinary. It carries the lightness and warmth of Cindy, but the mythic ancestry of Cynthia adds a deeper layer for those who look for it. Cindye feels playful, feminine, and lightly vintage, with a touch of stylized sparkle.