Kaiti Konstantinou (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.

Her first role was in the theatre play "Inner Voices" at the Art Theatre. She became widely known for her performance as Soso Papadima in the series "Crimes". She had participated in many theatrical performances, as well as in films and television series.

For the last two years of her life, she struggled with an aggressive form of cancer. She died as a result of this in a private hospital in Athens after a short hospitalization, on March 10, 2025, at the age of 62.