"Antonio Ghislieri" suna daidai ne wanda ke nufin sunan haihuwar Paparoma Saint Pius V (17 ga Janairu 1504 - 1 ga Mayu 1572). Shi ɗan ƙasar Dominican ɗan ƙasar Italiya ne wanda aka zaɓe shi a matsayin Paparoma na 225 na cocin Katolika a shekara ta 1566. An san shi da rawar da ya taka a yaƙi da gyare-gyare, da aiwatar da gyare-gyaren Majalisar Trent. An nada shi a matsayin waliyyi a shekara ta 1712.