Toronto Golf Club, Private golf club in Mississauga, Canada.

Toronto Golf Club is a private golf club in Mississauga, Ontario, with a 27-hole course designed by English architect Harry Colt. The layout is divided into the 18-hole Colt course and the 9-hole Watson course, set along the Etobicoke River.

The club began in 1876 on the Fernhill property in Toronto, east of Coxwell Avenue, and is the third-oldest golf club in North America after Royal Montreal and Royal Quebec. In 1909 it obtained a new charter without share capital and restored its original name, then moved to its present Mississauga site, where Harry Colt's course opened in the fall of 1912 and the clubhouse was finished in 1913. A further nine holes, added on land bought to the north in 1919, opened in 1921.

The club's two loops carry the names of the men who shaped them: the 18-hole Colt course and the 9-hole Watson course, giving the 27 holes in play. George Cumming, hired in 1900 at age 21, served as head professional for fifty years; the professional line runs through Arthur Smith, Lou Cumming, John Hunt and Doug Rankin to Donovan Fraser, appointed in 2024.

The club is private, so the course and clubhouse are for members and their guests; arrange access through a member before visiting. The grounds lie in Mississauga on the banks of the Etobicoke River, west of Toronto. The 18-hole Colt course and the separate 9-hole Watson course make up the 27 holes.

The 18-hole Colt course and the 9-hole Watson course together make 27 holes, though the club's tournament record is often credited to the Colt layout alone. The club has hosted the Canadian Amateur nine times, more than any other club, most recently in 2017.