McCaughan is a surname of Irish origin. It is an Anglicised form of the Irish language Mac Eacháin, meaning "son of Eachán". which cited for the surname "McCaughan". The personal name Eachán is diminutive of the personal name Eachaidh, which is derived from each, meaning "horse". which cited for the surname "McGahan".

People Brandon McCaughan – (born 2003) – Irish racing driver. Charles McCaughan – American – actor and director. Chris McCaughan – (born 1977) – American – guitarist and vocalist in the band The Lawrence Arms. Darren McCaughan – American baseball player Mac McCaughan – founding member of the rock band Superchunk, and co-founder of Merge Records. Patrick Kinney McCaughan – (1844-1903) – New Zealand politician.

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