This paper aims to address the need in rhetorical scholarship to recognize the obstacles that atheists face in the public sphere. I propose that, within the United States, there is a systematic normalization of theism, which I refer to as theistnormativity. While theistnormativity is advanced through various systems within a society, I argue that presidents reinforce theistnormativity through their use of religious politicalr hetoric. I reason that the theistnormativity that is prominent in presidential inaugural addresses from 1933 to 2017 contributes an ideal space that privileges theists and marginalizes atheists.