The name Kaleo is of Hawaiian origin, derived from the Hawaiian word "Leo," meaning "voice" or "sound." It is believed to have emerged in the 18th century or earlier when the Hawaiian language was first documented by European explorers and missionaries.

In Hawaiian culture, names often reflect elements of nature, spiritual beliefs, or personal attributes. The name Kaleo is thought to be associated with the concept of oratory, eloquence, or the power of speech. It may have been bestowed upon individuals who were skilled orators, storytellers, or leaders within their communities.

One of the earliest recorded instances of the name Kaleo can be found in the Hawaiian oral traditions and chants, which were passed down through generations. These ancient stories and songs frequently referenced individuals with this name, though precise dates are difficult to determine.

Throughout history, several notable individuals have borne the name Kaleo. One such person was Kaleo Kalani, a Hawaiian chief who lived in the late 18th century and played a significant role in the unification of the Hawaiian Islands under the rule of Kamehameha I.

Another prominent figure was Kaleo Kāne, a respected Hawaiian scholar and historian who lived in the late 19th and early 20th centuries. He was instrumental in preserving and documenting Hawaiian language, culture, and traditions.

In more recent times, Kaleo Griffith (born 1949) is an American singer-songwriter and musician known for his contributions to the Hawaiian music scene. His album "Kaleo" released in 1976, helped popularize contemporary Hawaiian music.

Kaleo Raleigh (born 1968) is a Hawaiian hula instructor and cultural practitioner who has dedicated his life to perpetuating the traditional hula and chanting practices of Hawaii.

Kaleo Manuhealiʻi (born 1990) is a professional Hawaiian surfer who has competed on the World Surf League's Championship Tour, representing his homeland and promoting Hawaiian culture through his sport.

These individuals, spanning different eras and fields, exemplify the enduring presence of the name Kaleo within Hawaiian culture and its association with the powerful and meaningful concept of voice and expression.