Gull Lake, which is a translation of the Indian word "Kiaskus", was originally named after a small lake northwest of town. This lake was later drained and no longer exists. In 1984, the Saskatchewan Department of Tourism and Small Business 1984 issued a brochure entitled 'Community Profile - Gull Lake' which made the following statement: "Gull Lake was named by a Professor John Macoun, a botanist with the Dominion Government. Mr. Macoun, while studying flora and fauna there, became impressed with the number and variety of gulls that visited the small lake situated just north of the community. Hence he derived the name Gull Lake."