Meaning and history
Possibly derived from Greek πόσις (posis), meaning “husband, lord,” and δᾶ (da), meaning “earth,” the name first appears in Mycenaean Greek inscriptions as po-se-da-o. In Greek mythology, Poseidon was the unruly god of the sea and earthquakes and the brother of Zeus, often depicted with a trident and riding a chariot drawn by white horses.
20062006: no US SSA record for this spelling
2007: no US SSA record for this spelling
2008: no US SSA record for this spelling
2009: no US SSA record for this spelling
2010: 9 births, rank #8,139
20112011: 10 births, rank #7,502
2012: 14 births, rank #6,001
2013: 16 births, rank #5,404
2014: 17 births, rank #5,252
2015: 21 births, rank #4,545
20162016: 27 births, rank #3,883
2017: 19 births, rank #4,935
2018: 28 births, rank #3,793
2019: 31 births, rank #3,571
2020: 27 births, rank #3,811
20212021: 32 births, rank #3,497
2022: 34 births, rank #3,412
2023: 21 births, rank #4,742
2024: 16 births, rank #5,659
20252025: 22 births, rank #4,539
In 2025, 22 babies were recorded with the name Poseidon, ranking #4,539 among boys.