Yes (although I'm not sure why you wouldn't), because the definition of Atheism is not believing in God, it doesn't refer to evolution at all.
Nothing would stop an atheist from believing that Earth was populated by aliens from space, only existed as a program in a massive computer or was the figment of his imagination. Most, however, don't follow these options.
Many Muslims and Orthodox Jews do not " believe " in evolution. Of course the truth does not need you belief to be true and something can be true whether you believe it or not. I should re-word this question. Is there an atheist that doesn't agree with evolution? There may be an atheist that does not agree with evolutionary theory, but what difference would that make? If there was someone out there I would like to hear his views on evolution.
You are not necessarily an atheist. People who read the Bible literally believe that God started us as humans and made us in his image so we were not monkeys. However, it is also possible to believe that God caused evolution which changed us from apes into the species we are today. Belief and religion should not be limited by one aspect of them. If you have faith you are not an atheist.
"John is an atheist, which means he does not believe in the existence of any gods or deities."
It means you are an atheist. An atheist is someone who does not believe in devils or gods.
Is considered an atheist by the mainstream.
No, if you are an atheist, you don't believe in god.
That's pretty much the definition of "Atheist" so yes, an atheist is someone who doesn't believe in god or gods.
No. Pagans believe in various gods. An atheist does not believe in any god or gods.
That depends on why they believe those things but general terms that may apply include atheist, pragmatist, materialist and skeptic.
Such a person is called an ATHEIST.
Atheism itself is the absence of belief in any deity or deities, rather than a religion. However, some belief systems, like some forms of Buddhism or certain branches of Unitarian Universalism, may be atheistic in nature.
A man who doesn't believe in god is commonly referred to as an atheist.