Namesakes
Albert I of Belgium
(middle name Clemens) (m) 1875-1934 
Other Royalty 1909-1934 Belgium (king)
Clemens Arnold
(m) 1978-
Olympic Medalists 2004 field hockey (bronze)
Clemens Maria Hofbauer
(m) 1751-1820
Saints
Clement I
(a.k.a. Clemens) (m) c. 35-99
Bishops of Rome and the Popes 92-99
Saints
Clement II
(a.k.a. Clemens) (m) 1005-1047
Bishops of Rome and the Popes 1046-1047
Clement III
(a.k.a. Clemens) (m) 1029-1100
Bishops of Rome and the Popes 1080; 1084-1100
Clement III
(a.k.a. Clemens) (m) 1130-1191
Bishops of Rome and the Popes 1187-1191
Clement IV
(a.k.a. Clemens) (m) 1195-1268
Bishops of Rome and the Popes 1265-1268
Clement V
(a.k.a. Clemens) (m) 1264-1314
Bishops of Rome and the Popes 1305-1314
Clement VI
(a.k.a. Clemens) (m) 1291-1352
Bishops of Rome and the Popes 1342-1352
Clement
(a.k.a. Clemens) (m) 1342-1394
Bishops of Rome and the Popes 1378-1394
Clement
(a.k.a. Clemens) (m) 1369-1446
Bishops of Rome and the Popes 1423-1429
Clement VII
(a.k.a. Clemens) (m) 1478-1534
Bishops of Rome and the Popes 1523-1534
Clement VIII
(a.k.a. Clemens) (m) 1536-1605
Bishops of Rome and the Popes 1592-1605
Clement X
(a.k.a. Clemens) (m) 1590-1676
Bishops of Rome and the Popes 1670-1676
Clement IX
(a.k.a. Clemens) (m) 1600-1669
Bishops of Rome and the Popes 1667-1669
Clement XI
(a.k.a. Clemens) (m) 1649-1721
Bishops of Rome and the Popes 1700-1721
Clement XII
(a.k.a. Clemens) (m) 1652-1740
Bishops of Rome and the Popes 1730-1740
Clement XIII
(a.k.a. Clemens) (m) 1693-1769
Bishops of Rome and the Popes 1758-1769
Clement XIV
(a.k.a. Clemens) (m) 1705-1774
Bishops of Rome and the Popes 1769-1774
Gustav von Wangenheim
(middle name Clemens) (m) 1895-1975
Notable Actors and Entertainers (actor)
Notable Filmmakers
Philippe of Belgium
(middle name Clemens) (m) 1837-1905
Other Royalty 1837-1905 Belgium (prince)