The Sun Life Centre in Toronto, Ontario (also known as 150 King Street West) was built in 1984 to house the Toronto operations of Sun Life Financial, serving as the insurance company's global headquarters until 2017.

[4] Construction of the stainless steel and glass high-rise structure was completed in 1984 and was originally developed to house the head office of Sun Life 9, now Sun Life Financial.

Sun Life moved its global headquarters from 150 King to the newly named Sun Life Financial Tower at One York in Toronto's South Core district in 2017.

Sun Life retains ownership over 150 King Street West and has leased the roughly 150,000 square feet of space it vacated.

[5] Located at the corner of King Street West and University Avenue, the taller East Tower is in the Financial District while the slightly shorter West Tower is located in the area known as the Entertainment District.