Seamus is a boy's name of Irish origin meaning “Supplanter; reflects the themes of protection and strength..” With 2 syllables, it is short and easy to say. Common nicknames include Shay, Jim. As of 2026, Seamus ranks #799 among boys' names in the United States and has held a steady level of popularity. Its highest US ranking was #585 in 2003.
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SHAY-mas
Phonetic spelling
Currently #799 among US baby names.
* Based on US Social Security Administration birth-registration data
Seamus means “Supplanter; reflects the themes of protection and strength..” It is a boy's name of Irish origin.
Seamus is pronounced SHAY-mas.
Seamus is most commonly used as a boy's name.
Seamus currently ranks #799 among boys' names in the United States.
Popular nicknames for Seamus include Shay, Jim.
Middle names that pair well with Seamus include Seamus Liam, Seamus Cillian, Seamus Fiachra.
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