Civilization Wiki
Wikipedia has a page called:

Euclid is a Great Person in the Civilization games.

Civilization III

Euclid is a Greek Scientific Leader.

Civilization IV

Civilization V

Euclid appears as a Great Scientist.

Civilization VI

Other games

Euclid is not present in (or the article has not been created for) the following games :

Game Article
Civilization VII Euclid (Civ7)
Civilization Revolution Euclid (CivRev)
Civilization Revolution 2 Euclid (CivRev2)
CivWorld Euclid (CivWorld)
Freeciv Euclid (Freeciv)
Civilization: Call to Power Euclid (CTP1)
Call to Power II Euclid (CTP2)
C-evo Euclid (C-evo)
Starships Euclid (Starships)

Not in the following games

It has been confirmed that Euclid is not present in the following games :

Civilization II
Civilization: Beyond Earth
Sid Meier's Colonization
Civilization IV: Colonization
Sid Meier's Alpha Centauri‎

Future technology (CivRev)
This is a disambiguation page used to differentiate articles on different topics of the same name. If an internal link led you to this page, you may want to go back and edit it so that it points to the desired specific page.