Bishops of Rome and the Popes: 2 popes, 1 antipope
Theodore I (a.k.a. Theodorus)   642-649  
Theodore (a.k.a. Theodorus)   687  
Theodore II (a.k.a. Theodorus)   897  
Characters in Greek Mythology: 1 character
Theodorus   (m)  
Dutch Prime Ministers: 1 prime minister
Theo Heemskerk   1908-1913  
Notable Actors and Entertainers: 1 actor/comedian
Theo Maassen (a.k.a. Theodorus)   1966-  
Notable Artists: 1 painter
Kees van Dongen (middle name Theodorus)   1877-1968  
Notable Athletes: 2 soccer
(soccer) Theo de Jong   1947-  
(soccer) Sjoerd Ars (middle name Theodorus)   1984-  
Olympic Medalists: 1 bronze, 1 gold, 1 silver
(gold) Theo Willems   1920   archery - moving target 28 m, team  
(silver) Dick Quax (a.k.a. Theodorus)   1976   5000 m  
(bronze) Theo Meijer   1992   judo  
Roman and Byzantine Emperors: 2 emperors
Emperor Theodorus Comnenus Lascaris   1205-1222  
Emperor Theodorus Ducas Lascaris   1254-1258  
Saints: 3 saints
Saint Theodore (a.k.a. Theodorus)   ?  
Saint Theodore (a.k.a. Theodorus)   ?-c. 310  
Saint Theodorus van der Eem   ?-1572