Updated June 9, 2019

Find Baby Names

Boy name origins & meanings

  • Latin : Rejoice; variation of Gaius

Boy name variations

Caius

Caius

+ 9% this year
Masculine
Rare
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Cai

Cai

+ 18% this year
Masculine
Rare
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Caio

Caio

- 6% this year
Masculine
Rare
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Kay

Kay

+ 10% this year
Neutral
Rare
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Kaye

Kaye

+ 15% this year
Masculine
Rare
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Keye

Keye

0 % this year
Masculine
Rare
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Keys

Keys

0 % this year
Masculine
Rare
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Cais

Cais

0 % this year
Masculine
Rare
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Family name origins & meanings

  • English : variant of Kay.
  • English (of Norman origin) : habitational name from Guise in Aisne, Picardy, which is first recorded in the 12th century as Gusia; the etymology is uncertain.
  • Irish : Anglicized form of Gaelic Mac Aodha (see McKay).