The search terms “obama” and “antichrist” return about 1.1 million hits on Google.
At least one web site is solely dedicated to answering this question (in the affirmative).
Some Christians take the Book of Revelation from the Christian Bible quite literally as a playbook for the end of the world. In Revelation, there are descriptions of cataclysmic events involving a diabolical mystical figure called “the beast” associated with the number 666 and a dragon.
While the word “antichrist” is not found in Revelation, the term, borrowed from John’s epistle, is used to describe the one who comes into the world blaspheming God, but gathering a huge following in the process.
While a thinly veiled allegory of the first-century Roman Empire, Revelation and it’s highly symbolic imagery has been associated with many prominent world figures over the ages.
And if there were any lingering doubts:
Barack Hussein Obama II
B+A- R-A+C* K*H+ U+ S* S-E+I+ N- O+B+A* M*A+I+I = 666
2+1-18-1+3*11*8+21+19*19-5+9+14-15+2+1*13*1+9+9 = 666
Note: Follow the usual math rules and do the multiplications first.