[ 2 syll. (t)heo, th-eo ] The baby boy name Theo is sometimes used as a girl name. Its pronunciation is -THIY-ow (English) or TEY-ow (Dutch) †. Theo is used predominantly in the English, Dutch, German, and Scandinavian languages, and its origin is Germanic and Old Greek.
Theo is a short form (English) of the name Theobald (English and German).
Theo is also a short form (Dutch, English, German, and Scandinavian) of the name Theodor (Czech, English, German, Romanian, and Scandinavian) as well as a short form (Dutch, English, German, and Scandinavian) of the name Theodore (English, French, and Greek).
Theo is also a short form (Dutch, English, German, and Scandinavian) of the name Theophil (German).
Teo (German variant spelling) is a form of Theo.
Theo is popular as a baby name for boys, and it is also considered trendy. The name's popularity has been rising since the 2000s. At the modest peak of its usage in 2018, 0.080% of baby boys were given the name Theo. Its ranking then was #243. In 2018, out of the group of boy names directly linked to Theo, Theodore was the most widely used. Its use outnumbered Theo's by 5 times in that year. There were times from 1918 to 1924 that the name Theo was given more often to girls, but it is slightly more popular as a baby boy name today. In 1929, 8.065% more baby boys than girls were given the name Theo.
† Pronunciation for Theo: TH as in "theme (TH.IY.M)" ; IY as in "eat (IY.T)" ; OW as in "oak (OW.K)" ; T as in "tee (T.IY)" ; EY as in "ate (EY.T)"