Pius adında 12 tane Katolik Kilisesi papası vardır: *I. Pius (c. 140–154; officially listed as 142/146 – 157/161) *II. Pius (1458–1464) *III. Pius (1503–1503) *IV. Pius (1559–1565) *V. Pius (1566–1572) *VI. Pius (1775–1799) *VII. Pius (1800–1823) *VIII. Pius (1829–1830) *IX. Pius (1846–1878) *X. Pius (1903–1914) *XI. Pius (1922–1939) *XII. Pius (1939–1958) Pius