The k stand for Knight, one of the two Swiss who founded the company in a garage
Kmart uses a K as its logo.
The Korn logo.
Flickr's logo has a blue k and red r in it.
K-mart
There are so many logos that have a K on it. The most popular one is the KFC logo for Kentucky Fried Chicken.
Kelloggs
One can purchase K-Swiss shoes online, directly from K-Swiss' personal website. Famous Footwear, Foot Locker, and Finish Line stores also carry K-Swiss products in their physical locations as well as sell them online on their websites.
La letra k [ka] [a] as in Italian "amare", to love.
Kelloggs
Kelloggs.
Nokia
kmart