Tam O'Shanter-Sullivan is a neighbourhood in the east end of the city of Toronto, Ontario, Canada, in the district of Scarborough.

The neighbourhood is bordered by Huntingwood Drive to the North, Kennedy Road to the East, Highway 401 to the South and Victoria Park (and Pharmacy Ave) to the West.

The post office was closed in 1912, but reopened in 1956 in the drug store in Wishing Well Plaza at the south-east corner of Pharmacy and Sheppard, as a result of the residential developments in the area.

The headwaters of Taylor-Massey Creek ran underground through the subdivision, above ground through Wishing Well Park, and under Highway 401.

The next subdivision, "Wishing Well Acres" was east of Pharmacy on the north part of Lots 33 and 34, Concession II, which had been farmed by Christopher Thomson and Ichabod Vradenburg(h) in the 1870s.

From 1927 to 1946, Harry C. Hatch raised and trained five King's Plate winners on his farm at the northeast corner of Pharmacy and Sheppard, including Monsweep (1936), Goldlure(1937), Budpath(1941), Acara(1944) and Uttermost(1945).