Established by the Garibaldi Park Act 7 March 1927, containing 618,280 acres more or less. Boundary amendments: OIC 3468, 9 November 1967; OIC 3835, 14 December 1967; OIC 1293, 16 April 1973 to remove 2,400 acres for expansion of Golden Ears Park; OIC 2863, 9 November 1978; OIC 1633, 14 August 1985; OIC 2325, 6 February 1987; OIC 1183, 10 August 1989; OIC 1201 2 August 1990 to remove 250 ha. for the establishment of Blackcomb Glacier Park. Conversion of OIC to Statute designation per Bill 17-2000: Protected Areas of British Columbia Act, 29 June 2000; the whole now containing 194,650 ha. more or less. Per Bill 17 - 2021: Protected Areas of British Columbia Amendment Act, 2021; the whole park now containing approximately 188 667 ha.

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office

A 20,000+ hectare area incorporating much of the Cheakamus River watershed has been identified by Squamish Nation as a Wild Spirit Place, called Kwáyatsut. A Wild Spirit Place is an area of cultural, spiritual and/or ecological significance to the Squamish Nation. Further analysis is needed to determine the appropriate designation and boundaries for this area, which is largely within Garibaldi Provincial Park. (Squamish Nation Forest Recreation Guide, 2003). The meaning or significance of the word Kwáyatsut is not provided; pronunciation may approximate kway a sote.

Source: included with note