No. 18: Dell
Brand Value: $4.9 billion
Dell occupies the same spot on this list as it did in 2012, despite the fact its brand value declined 25 percent this year. The wrangling over CEO Michael Dell's efforts to take the company private could be tarnishing the company's brand. Or the Dell name may not be as visible today as consumers buy more tablet computers and sales of PCs -- Dell's most recognized product -- shrink.