Richard Dawkin’s The God Delusion, Daniel Dennett’s Breaking the Spell, Christopher Hitchen’s God is not Great, and Sam Harris’ The End of Faith were published from 2004 to 2007. The new atheism was widely spread by these books. Compared to other atheisms, the particularity of this movement is rooted in its motivations, which are in a sense mostly cultural and political, rather than strictly circumscribed to philosophical issues. The goal of this note is to characterize the new atheism through the arguments given by the four referred books.De 2004 a 2007 se dio la aparición de cuatro libros que han contribuido a difundir el nuevo ateísmo a gran escala y dar a conocer su agenda político-social: The God Delusion de Richard Dawkins, Breaking the Spell de Daniel Dennett, God is not Great de Christopher Hitchens y The End of Faith de Sam Harris. La particularidad del nuevo ateísmo radica en sus motivaciones, las cuales, antes que meramente filosóficas, son en considerable medida culturales y políticas. La presente nota tiene por objeto caracterizar este movimiento delineando la argumentación de los cuatro libros en referencia.