The name Kiara is of Italian origin and derives from the masculine name Chiaro, which means "clear" or "bright" in Italian. The feminine form of the name, Chiara, was popularized during the Middle Ages and is believed to have been inspired by Saint Clare of Assisi, a 13th-century Italian saint.

While the name's roots are Italian, it gained popularity in India and other parts of South Asia in the late 20th century. In Sanskrit, the name Kiara is thought to be derived from the word "Kira," which means "ray of light" or "sunbeam." This Sanskrit connection may have contributed to the name's appeal in the region.

One of the earliest recorded uses of the name Kiara is in the 13th-century Italian text "Vita di Santa Chiara d'Assisi" (Life of Saint Clare of Assisi), which chronicles the life of the aforementioned Saint Clare. The name was also mentioned in various religious texts and historical records throughout the Middle Ages and Renaissance periods in Italy.

In terms of notable historical figures with the name Kiara, one example is Kiara Libekina, a 14th-century Italian nun and author who wrote several religious texts. Another is Kiara Avogadro, a 16th-century Italian mathematician and philosopher who made significant contributions to the field of algebra.

Moving to more recent history, Kiara Mukherjee was an Indian actress and dancer who rose to prominence in the early 20th century. She was known for her performances in various Indian classical dance forms and was a pioneer in bringing these art forms to wider audiences.

Another notable figure is Kiara Advani, an Indian actress born in 1992, who has appeared in numerous Bollywood films and received critical acclaim for her performances. She is considered one of the most promising young talents in the Indian film industry.

Finally, Kiara Petersen is a contemporary South African cricketer who has represented her country in various international tournaments and is widely regarded as one of the best all-rounders in women's cricket.