The name Rayna has its origins in the Sanskrit language, which is an ancient Indo-Aryan language from the Indian subcontinent. The name is derived from the Sanskrit word "rajna," which means "queen" or "princess." It is believed to have been used as a name for girls in India as early as the 6th century BCE.

One of the earliest recorded references to the name Rayna can be found in the Hindu epic poem, the Mahabharata. In this ancient text, Rayna is mentioned as the name of a princess who was known for her beauty and grace.

In the 12th century, the name Rayna gained popularity in the Middle East, particularly in the Persian culture. During this time, the name was often spelled as "Rayina" or "Raina." It was associated with royalty and was commonly given to daughters of noble families.

Throughout history, there have been several notable women who bore the name Rayna. One of the earliest was Rayna of Trebizond (1330-1363), a Byzantine princess who ruled the Empire of Trebizond in modern-day Turkey.

Another significant figure was Rayna Kashabova (1837-1891), a Bulgarian revolutionary and women's rights activist who played a crucial role in the struggle for Bulgarian independence from the Ottoman Empire.

In the 20th century, Rayna Gailliard (1923-2019) was an American soprano and civil rights activist who performed at the inauguration of President John F. Kennedy in 1961.

Rayna Kozhuharova (born 1963) is a Bulgarian writer and poet who has received numerous awards for her literary works, including the prestigious Vick Prize for Literature in 2018.

Rayna Prahova (1847-1918) was a Bulgarian teacher and feminist who founded the first girls' school in the country and played a pivotal role in advancing women's education and rights.

While the name Rayna has its roots in ancient cultures, it continues to be used in various parts of the world today, carrying with it a sense of regal elegance and strength.