The name Dyann, of Welsh origin, is derived from the male name Dionysius, which means 'of the divine wine'. However, Dyann is often used as a female name in modern times. It was popularized in the mid-20th century, perhaps due to its similarity to other popular names like Deanna and Diane. Pronounced 'DI-an', this unique name offers a blend of classic and contemporary styles.
The name Dyann experienced varied popularity over the years, peaking in the late 1940s and early 1950s with over 30 births annually during this period. However, its usage declined significantly from the mid-1970s onwards, with fewer than 10 births per year since then.