Coca-Cola
Though it was never their original intention, one 2013 campaign made an interesting discovery in the Coca-Cola logo. Turns out, the flag of Denmark can be seen between the "O" and the "L" in "Cola." The reason Coca-Cola is a red logo dates back to over 130 years ago. The barrels the drink came in were painted red so that tax officials wouldn't mistake it for brown alcohol.
Amazon
Amazon is a company that carries everything you could ever think to ask for, and they know that. That's why the corporation made its logo with an arrow pointing from "A" to "Z", signifying their wide array of goods available to customers. As an added bonus, the arrow also looks like a smiley face, with the arrowhead acting as a dimple on the brand's grin.