Ludoviko IX (Poissy, karibu na Paris, Ufaransa, 25 Aprili 1214 – Tunis, Tunisia, 25 Agosti 1270), maarufu kama Mtakatifu Alois, alikuwa mfalme wa Ufaransa tangu 1226 hadi kifo chake. Anahesabiwa kuwa mtawala bora wa Kikristo kwa jinsi alivyojalia ibada, alivyoheshimu ndoa yake, alivyohudumia wananchi, hasa maskini na wagonjwa, na alivyotetea Wakristo waliodhulumiwa. Alifariki dunia kwa tauni aliyoambukizwa kwa kuwahudumia askari zake wakati wa vita vya msalaba. Ni mfalme pekee wa nchi hiyo kutangazwa mtakatifu (na Papa Boniface VIII, 1297). Sikukuu yake huadhimishwa tarehe aliyoaga dunia. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Martyrologium Romanum Davis, Jennifer R. "The Problem of King Louis IX of France: Biography, Sanctity, and Kingship," Journal of Interdisciplinary History Autumn 2010, Vol. 41, No. 2: 209–225. review of Gaposchkin (2008) and Le Goff (2009) Gaposchkin, M. Cecilia. The Making of Saint Louis: Kingship, Sanctity, and Crusade in the Later Middle Ages (Cornell University Press, 2008) 352 pp.