Meaning and history
Gaius was a common Roman praenomen, or given name, of uncertain meaning, possibly derived from Latin gaudeo, meaning “to rejoice,” though it may instead be of Etruscan origin. Among its best-known bearers were Gaius Julius Caesar, the leading figure of the Roman Republic, and his adopted son Gaius Octavius, later Augustus and the first Roman emperor. The name also appears in the New Testament, where it belongs to a bishop of Ephesus who is venerated as a saint.
20062006: 14 births, rank #5,781
2007: 17 births, rank #5,210
2008: 16 births, rank #5,487
2009: 20 births, rank #4,748
2010: 13 births, rank #6,359
20112011: 13 births, rank #6,256
2012: 24 births, rank #4,131
2013: 30 births, rank #3,497
2014: 42 births, rank #2,805
2015: 15 births, rank #5,746
20162016: 23 births, rank #4,327
2017: 28 births, rank #3,781
2018: 19 births, rank #4,918
2019: 22 births, rank #4,480
2020: 30 births, rank #3,570
20212021: 19 births, rank #4,936
2022: 23 births, rank #4,442
2023: 17 births, rank #5,470
2024: 31 births, rank #3,605
20252025: 31 births, rank #3,583
In 2025, 31 babies were recorded with the name Gaius, ranking #3,583 among boys.