Pinterest?
Pandora
Pandora has a white box and blue P.
pandora
The company with a logo that is a blue CP Colgate-Palmolive. Colgate -Palmolive is a well known American company.
Nokia Connecting People
The company that has a red circle logo with a red R in it is RadioShack.
A circle :P
The use of a small letter p is common in most company logos. Paperaso is a paper company that uses a gray small p in the logo. Pinterest used a cursive small white p against a red circle.
pepsi :P
Rabanne
Pirelli
That would be Pirelli - Certainly if the P is wide!
What logo has a yellow background with a red P on it?
Pirelli or Pareto Logic
Pirelli
It is a stylized lowercase "P" in white-on-red, or red-on-white on a red background.