High Ongar is a village and civil parish in the County of Essex, England. It is located a mile (1½ km) north-east of Chipping Ongar, 8 miles (13 km) west of Chelmsford and 6 miles (10 km) north-west of Brentwood. The most prominent building within High Ongar's Conservation Area is the parish church of St. Mary the Virgin, which is listed Grade I. The church dates from the mid-12th century although it was extended and restored in the 19th century. Thomas Chase, former Lord Chancellor of Ireland and Chancellor of Oxford (died 1449) spent his last years as vicar here.