It seems so.

According to a Gallup poll, “Americans believe that one’s stature has a decided effect on a variety of important dimensions.”

More people would prefer to be taller than shorter:

People think that taller people have a greater likelihood of getting respect at work, and even getting promoted:

Via Geoffrey Arnold, at The Social Complex. See also Arnold’s guest posts from The Social Complex introducing the concept of heightism as a gendered prejudice and discussing heightism (and other icky stuff) at Hooters.