Two quinic acid esters, 5-O-caffeoylquinic acid (1) and 5-O-coumaroylquinic acid (2); three myricetin glycosides, myricetin 3-O--L-rhamnopyranosyl(1′′′6′′)-D-galactopyranoside (3), myricetin 3-O--D-glucuronide (4), and myricetin 3-O--D-galactopyranoside (5); 1,6-digalloyl--D-glucose (6); and (+)-catechin (7) were isolated and identified for the first time from the leaves of Schinus terebinthifolius Raddi. Furthermore, investigation of tannic acid content was carried out by HPLC.