Macintosh or Mackintosh

/k/ in both instances...

"macintosh" is a variant spelling of "mackintosh" and both have the same pronunciation.


ORIGIN mid 19th cent.: named after Charles Macintosh (1766-1843), the Scottish inventor who originally patented the cloth.
- New Oxford American Dictionary

Since my first Mac back in 1984, I thought that McIntosh was an apple variety, hence the "Apple Macintosh"...

Mac or Mc at the beginning of Scottish and Irish names is a Gaelic word meaning "son of", as in MacArthur or McAllan. (As the element that follows it is usually a proper name in itself, some people capitalise the first letter of that element as well, as I have done in these examples.) As it is in origin a separate word, the /c/ sound is not changed by the letter that follows it.

The equivalent in Welsh surnames is "Ap" (which is actually related to the Gaelic "Mac"). This has tended to get worn down into an initial P or B: thus "ap Evan" became Bevan, "ap Rhys" became Price or Preece, "ap Richard" became Pritchard.

Francis,

Good stuff here.

McIntosh, MacIntosh, Mackintosh and Macintosh are all pronounced the same.