141 Kirk Dr, Thornhill, ON L3T 3L3, Canada
- SCHOOL TYPE: Catholic
- WEBSITE: St Anthony Catholic ES
- SCHOOL LEVEL: Pre-Kindergarten, Kindergarten, Elementary, and Middle
- GRADES OFFERED: PK - 8

The Royal Orchard neighbourhood, also known as Langstaff, is in northwest Markham, between Bayview Ave on the east and Yonge St on the west, north of Romfield Circuit and Thornheights Road to the north, and with the Rouge River to the south. Royal Orchard Blvd transects the neighbourhood east–west, and a railway line also divides the neighbourhood. A golf course lies in the southern region. Commercial areas and high-rise complexes lie along Yonge St., while most of the area has single-detached homes built in the 1970s-1980s.