Erik IX (kwa Kiswidi: Erik Jedvardsson; Erik den helige; Sankt Erik; 1120-1125 hivi - Uppsala, Uswidi, 18 Mei 1160) alikuwa mfalme wa Uswidi kuanzia mwaka 1156 hivi hadi kifo chake. Ndiye wa kwanza katika ukoo wake wa kifalme uliotawala hadi mwaka 1250. Aliongoza kwa busara na kutetea haki za wanawake. Alijitahidi pia kuinjilisha Ufini, ambao wakazi wake walikuwa bado Wapagani, kwa kumtuma huko askofu Erik wa Ufini . Hatimaye aliuawa akiwa anashiriki Misa. Tangu kale anaheshimiwa na Wakatoliki na Walutheri kama mtakatifu mfiadini. Sikukuu yake huadhimishwa tarehe ya kifo chake. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko The only full account of Eric's life is a hagiographic legend dating from the late 13th century. The historicity of the legend has been much-discussed by Swedish historians. It tells that Eric was of royal blood and was unanimously chosen king of Sweden when there was a vacancy of the kingship. It also states that Eric reigned for ten years, which would put the beginning of his reign in c. 1150.