|Administrative region||West Greece|
|• Population||109 (2011)|
|Time zone||EET (UTC+2)|
|• Summer (DST)||EEST (UTC+3)|
Matesi (Greek: Μάτεσι) is a small mountain village in the municipal unit of Andritsaina, Elis, Greece. According to the 2011 census, its population was 109. It is located on a hill above the left bank of the river Alfeios. It is 3 km northwest of Theisoa, 6 km east of Alifeira and 6 km northeast of Andritsaina.
Matesi is the birth place of George and Theodora Drelles (ne Dreliozis, nee Trapalis). They eventually settled in Muskegon, Michigan after arriving in the USA in 1912. They raised a family of nine children, and were successful in the restaurant business. Five sons served in the US Army in World War II. The second son, Peter, received a Bronze Star.
- "Απογραφή Πληθυσμού - Κατοικιών 2011. ΜΟΝΙΜΟΣ Πληθυσμός" (in Greek). Hellenic Statistical Authority.