Alexandros Kontostavlos (Greek: Αλέξανδρος Κοντόσταυλος; 1789, Chios – 1865, Athens) was a Greek banker, magnate and politician.
Konstavlos was born on the island of Chios in 1789 and descended from the main family with its origins from the Byzantine Empire. He was a member of Filiki Etaireia and during the latter part of the Greek Revolution, the Panellinion in 1828 and in 1829. He died in Athens in 1865, he left two children Othonas and Alexandros A. Kontostavlou.