Kaiti Konstantinou (Greek: Καίτη Κωνσταντίνου, Rododaphne, Achaia, 18 December 1962 – Athens, 10 March 2025) was a Greek comedic actress of theatre, film and television. She became particularly known for her role as Soso Papadima in the comedy series Crimes (1998-2000). She participated in many television series, theatre performances and films.

She was born in Rododaphne, Achaia. She simultaneously finished the Philosophy and Drama School of the Art Theatre, from which she graduated in 1986, together with her friends Maria Kavogianni and Yro Mane. She had also worked as a philologist.