The surname OMEGA originates from the Greek language, derived from the word "omega," which is the last letter of the Greek alphabet. It is believed to have emerged as a surname during the Byzantine era, when many Greek families adopted surnames based on their occupations, personal characteristics, or other distinguishing features.

In ancient Greece, the term "omega" was often used metaphorically to signify the end or the ultimate, which may have influenced its adoption as a surname. The earliest recorded instances of the name OMEGA can be traced back to the 9th century, found in some Byzantine manuscripts and church records from the region of Asia Minor, which was part of the Byzantine Empire at the time.

One of the earliest known bearers of the surname OMEGA was Ioannes Omega, a Byzantine scholar and theologian who lived in the late 10th century. He was renowned for his extensive knowledge of Greek philosophy and his contributions to the intellectual discourse of the period.

The name OMEGA also appeared in the Venetian Republic during the Middle Ages, where it was sometimes spelled as "Omegha" or "Omecha." Notable individuals with this surname include Marco Omegha, a Venetian merchant and explorer who traveled to the Middle East in the 14th century, and Giacomo Omecha, a influential Venetian jurist and legal scholar from the 15th century.

In the 16th century, the name OMEGA was recorded in the Iberian Peninsula, particularly in Spain and Portugal. One notable bearer was Pedro Omega, a Spanish navigator and cartographer who participated in several expeditions to the Americas in the early 1500s.

During the Renaissance period, the name OMEGA gained popularity among intellectuals and scholars who were fascinated by classical Greek culture. One such individual was Niccolò Omega, an Italian humanist and philosopher who lived in the late 15th century and was known for his translations of ancient Greek texts.

As the centuries passed, the surname OMEGA spread across Europe and beyond, with bearers found in various countries and regions. In the 19th century, John Omega was a prominent British mathematician and astronomer who made significant contributions to the field of celestial mechanics.

While the surname OMEGA is not among the most common surnames globally, it has left its mark in various historical contexts, reflecting the enduring influence of Greek language and culture on Western civilization.