AAC Royce is a semi-leafless, green cotyledon field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, Lacombe, in Alberta, Canada. It has a maturity of 105 d, 1000-seed weight of 254 g, and medium lodging resistance. AAC Royce is resistant to powdery mildew (caused by Erysiphe pisi Syd.) and moderately susceptible to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Royce is adapted to all field pea growing regions in western Canada.