{{other uses}} '''Theo''' is a given name and a hypocorism.

==Greek origin== Many names beginning with the root ''Theo-'' derive from the Ancient Greek word {{lang|grc-Latn|theos}} ({{lang|grc|θεός}}), which means God,<ref name=name>{{cite web|author=Campbell, Mike|url=http://www.behindthename.com/name/theodore |title=Meaning, Origin and History of the Name Theodore |website=Behind the Name |date= |accessdate=July 26, 2011}}</ref> for example: *Feminine names: Thea, Theodora, Theodosia, Theophania, Theophano and Theoxena *Masculine names: Theodore, Theodoros/Theodorus, Theodosius, Theodotus, Theophanes, Theophilus, Theodoret and Theophylact

==Germanic origin== Many other names beginning with "Theo-" do not necessarily derive from Greek, but rather the old Germanic "theud", meaning "people" or "folk".<ref name=name/> These names include: *Theobald, Theodahad, Theodard, Theodebert, Theodemir, and Theodoric

==People with the name Theo== See Theo and Théo for a current alphabetical list of all people with the first name Theo or Théo in the English Wikipedia.

Among better known people with this name are: <!--present in wikipedias of at least 10 different languages, 15 for sportspeople-->

*Theo Adam (1926–2019), German classical bass-baritone *Theo Albrecht (1922–2010), German entrepreneur and billionaire *Theo Angelopoulos (1935–2012), Greek filmmaker, screenwriter and film producer *Theo Avgerinos (born 1978), American film director *Theo Benedet (born 2001), Canadian American football player *Theo Bos (born 1983), Dutch road and track cyclist, five-time world champion *Theo van Doesburg (1883–1931), Dutch artist, founder and leader of the De Stijl art movement *Theo Epstein (born 1973), American baseball executive, three-time World Series champion *Theo Fleury (born 1968), Canadian ice hockey player *Theo Geisel (1904–1991), American author better known as Dr. Seuss *Theo van Gogh (art dealer) (1857–1891), brother and supporter of painter Vincent van Gogh *Theo van Gogh (film director) (1957–2004), Dutch film director, great-grandson of the above *Théo Golliard (born 2002), Swiss footballer *Theo Grant (born 2000), Canadian football player *Theo Heemskerk (1852–1932), Dutch Prime Minister *Théo Hernandez (born 1997), French footballer *Theo Hutchcraft (born 1986), English singer and songwriter *Theo Jackson (disambiguation), multiple people *Theo James (born 1984), English actor *Theo Jansen (born 1948), Dutch artist and kinetic sculptor *Theo Janssen (born 1981), Dutch footballer *Theo Johnson (born 2001), Canadian American football player *Theo Jörgensmann (1948–2025), German jazz clarinetist and composer *Théo Lefèvre (1914–1973), Belgian Prime Minister *Theo Lingen (1903–1978), German actor, film director and screenwriter *Théo Lucien (born 2001), French taekwondo practitioner *Theo Mackeben (1897–1953), German composer and conductor *Theo Melin Öhrström, Swedish-American football player *Theo Osterkamp (1892–1975), German flying ace in both World War I and World War II *Theo Pabst (1905–1979), German architect *Theo Pelouze (1807–1867), French chemist *Theo de Raadt (born 1968), South African-born Canadian founder and leader of the OpenBSD and OpenSSH projects *Theo Ratliff (born 1973), American basketball player (Theophalus) *Theo Rossi (born 1975), American actor and producer *Théo van Rysselberghe (1862–1926), Belgian neo-impressionist painter *Théo Sarapo (1936–1970), French singer and actor, husband of Édith Piaf *Theo Smyrnaeus (fl. 100 CE), Greek philosopher and mathematician (Theon) *Theo Sommer (1930–2022), German newspaper editor and intellectual *Theo Timmer (born 1949), Dutch motorcycle racer *Theo Timmermans (footballer born 1926), Dutch footballer *Theo Timmermans (born 1989), Dutch footballer *Theo Von (born 1980), American stand-up comedian, television personality, host, and actor *Theo Waigel (born 1939), German politician, known as the father of the Euro *Theo Walcott (born 1989), English footballer *Theo Wease Jr. (born 2001), American football player *Theo Zagorakis (born 1971), Greek footballer and politician *Theo (born 2005), formerly known as Theoz, Swedish influencer and singer *Theø, member of Italian band La Sad and formerly of Upon This Dawning

== Fictional characters == *Theo, the self-proclaimed 'King of All the Land', protagonist of ''Ultra Jump Mania'' and Tari's first companion in the ''Meta Runner'' web series * Theo Decker, main character in Donna Tartt's novel ''The Goldfinch'' * Theo Faron, the main character in P.D. James's 1992 novel ''The Children of Men'' and of the 2006 film ''Children of Men'' based on the novel * Theo (''Celeste''), a character in the video game ''Celeste'' * Theo Fobius, in the webcomic ''Schlock Mercenary'' *Theo Huxtable, in the sitcom ''The Cosby Show'' * Theo, a character in the animated television series ''Looped'' * Theo Kojak, lead character of the ''Kojak'' television series * Theo Lion, a character from the children's television series ''Between the Lions'' * Theo Raeken, a fictional character in the 2011-2017 TV series ''Teen Wolf'' * Theo Saville, one of the main characters on the television series ''A Million Little Things'', son of Eddie and Katherine

== See also == *{{intitle|Theo}}

*Teo (disambiguation) *THEO (Testing the Habitability of Enceladus's Ocean), a spacecraft mission to Enceladus *Teo (given name) *Teo (surname)

== References == {{reflist}}

{{given name}}

Category:Masculine given names Category:Dutch masculine given names Category:Hypocorisms Category:English masculine given names