Is Islamophobia racist?

No. Muslims aren't a race they are a religion. Same with Jews.

Well, the problem with this, is that usually the phobics don't know. They're almost always unwilling to even look up the basics outside their own social circles (i.e. "What's a Muslim?" he asks his friend, pastor of Westboro Baptist Church). You can expect Rednecks to shoot of their guns and go "9/11! 9/11!" if you mention a Muslim, and I'm sure most of them go "Jews!? Didn't they kill Jesus!!!!???"

These people literally do not know Islam is a religion. They do not know Arabic is a race. They do not know Jew is a religion. They honestly don't know most of the Bible they're 21-gun-saluting. Because they can't read.

Is Islamaphobia racist? It depends on the brainpower the perpetrator has. If it's a person who might actually be smart, then no, it's just Islamaphobia. But if they're a redneck, just assume they hate anyone who "did 9/11!!"