This article provides a brief survey of public collections of Thai manuscripts held in the United States, which is home to roughly 650 Thai manuscripts. Of the twenty institutions that house Thai manuscripts, the following five are highlighted in this article: the Asian Art Museum, the University of California at Berkeley, the New York Public Library, Princeton University Libraries, and the Walters Art Museum. The second half of this article details a few key manuscripts held at the University of Pennsylvania: the Abhidhamma chet Kamphi, one book of the Phra ‘Aphaimanī epic, and a rare set of royal decrees. In short, this overview illustrates the vast diversity of genres of Thai manuscripts held in the United States – including a Thai translation of the Gospel of Matthew – as well as the diversity of its collectors in the nineteenth-century, the majority of whom were women.