Vasilios is of Greek origin, derived from the Greek word 'basileus', which translates to 'king'. It's a traditional yet elegant name that has been used in Greece for centuries. Vasilios is typically shortened to Vasili in everyday usage and is often accompanied by the diminutive form Vasile. The name gained popularity outside of Greece due to its association with Vasiliev, a Russian surname also derived from 'basileus'. Despite its regal origins, Vasilios has not been widely adopted internationally and remains relatively uncommon outside of the Greek-speaking world.
"The name Vasilios has seen fluctuating popularity over the past century, with peak years between 1965 and 1975, where it reached as high as 44 births in a single year (1975). However, from the late 1980s onwards, its usage has significantly declined, with fewer than 30 births annually. The most recent years show a further decrease, with only 12 births recorded in 2023."