In this thesis I study alienation in Edward Hopper s and Jackson Pollack s paintings. Each of these American painters expressed alienation in his art in a distinctive way. The source of their alienation is different, too, yet they share some personality traits. While alienation in Pollock s paintings is mainly derived from his psychological characteristics, the source of alienation in Hopper s paintings is mostly sociological. The alienation in Hopper s paintings is the manifestation of man s new status in the world, which is defined by Modernity. He is warning about the situation, in which despite the superficial achievements, man is alone. And, I believe, Pollock is the offspring of that situation.