Painting US Empire is the first book to offer a synthetic account of art and US imperialism around the globe in the nineteenth century. In this work, art historian Maggie M. Cao crafts a nuanced portrait of nineteenth-century US painters' complicity with and resistance to ascendant US imperialism, offering eye-opening readings of canonical works, landscapes of polar expeditions and tropical tourism, still lifes of imported goods, genre paintings, and ethnographic portraiture. Revealing how the US empire was "hidden in plain sight" in the art of this period, Cao examines artists including Frederic Edwin Church and Winslow Homer who championed and expressed ambivalence toward the colonial project. She also tackles the legacy of US imperialism, examining Euro-American painters of the past alongside global artists of the present. Pairing each chapter with reflections on works by contemporary anticolonial artists including Tavares Strachan, Nicholas Galanin, and Yuki Kihara, Cao addresses important contemporary questions around representation, colonialism, and indigeneity. This book foregrounds an underacknowledged topic in the study of nineteenth-century US art and illuminates the ongoing ecological and economic effects of the US empire.