Of course.
Islam is just "reformed" and "purified" Christianity & Judaism. Mohammed and his inner circle were fanatics who believed the basic god was real, but wanted to clean Christianity of its various blasphemies: "Polytheism" (3 gods), "God having a child", etc. and created a new scripture built from the earlier ones. They weren't the last ones to rework Christianity: Joseph Smith did it, the Unitarians reformed the Trinity and divinity of Jesus away as has others before them (and when I heard the "Word of God" at Mass, that's the way I generally understood things).
On another level, Islam, Christianity (all forms), Judaism, Samaritanism, and a few other small religions all derive from the same original god concept and are therefore considered "Abrahamic religions" and are in that way alike.
Finally, and most fundamentally, they are all religions with gods and dogmas and are therefore similar along with many other religions with different gods.
Stalin and Mao were communist dictators. Their "branches" of Communism and their dictatorial cult are often labeled with their names: Stalinism and Maoism. They have dogmas not so different from religions, but with out a divine being, just an adored human. In that way those dogmas are like religions which are also dogmas.
"Atheism" (no such thing) has no dogma.
An atheist, is someone who does not believe in any god. Nothing more, nothing less. The only way to get kicked out of the atheist club is to believe in a god. (Then you would be a theist, another category that does not have *a* dogma. Identifying as a "theist" says nothing about your philosophy or theology.)