Vodafone is one company that has the red tear drop in a white circle. There are probably other companies that have a similar logo as well.
Champion
Airwalk's logo is a white tent in a red circle.
The company that has a red circle logo with a white R in it is Rossignol
target
Vodafone
The company that has a red circle logo with a red R in it is RadioShack.
Castelli
Rossignol
Camper
The logo with a red upside-down apostrophe in a white circle belongs to the clothing brand named Supreme. The logo has become iconic and is easily recognizable among streetwear enthusiasts.
airwalk
levitz
Vodafone