Ekaterini
| Gender | Female | 
|---|---|
| Origin | |
| Word/name | Greek | 
| Other names | |
| Variant form(s) | Ekaterina | 
| Related names | Aikaterini | 
| See also | Katherine | 
Ekaterini or Aikaterini (Greek: Αικατερίνη, Aikaterínē) is a Greek feminine given name. It is an original Greek form of Katherine. Notable people with the name include:
- Princess Katherine of Greece and Denmark (1913-2007), originally Αικατερίνη, was the third daughter and youngest child of King Constantine I of Greece and Sophia of Prussia and Sister of King Paul of the Hellenes
 - Katherine, Crown Princess of Yugoslavia, originally Αικατερίνη, is the wife of Alexander, Crown Prince of Yugoslavia
 - Ekaterini Koffa (born 1969), Greek sprinter
 - Katerina Nikolaidou (born 1992), Greek rower
 - Ekaterini Pavlidou (born 1993), Greek chess player
 - Katerina Stefanidi (born 1990), Greek pole vaulter
 - Ekaterini Thanou (born 1975), Greek sprinter
 - Ekaterini Voggoli (born 1970), Greek discus thrower