Jay Morrish (c. 1936 – March 2, 2015) was an American golf course designer. He graduated from Colorado State University with a degree in Landscape and Nursery Management. In 1964, he taught Horticulture at that university while pursuing graduate degrees.
Morrish served a four-year apprenticeship with Robert Trent Jones, and subsequently two years with George Fazio. From 1972–1982, he worked for Jack Nicklaus as a member of his golf course design support staff.
In 1983, Morrish left the Nicklaus organization and formed a partnership with PGA Tour professional Tom Weiskopf. The Morrish/Weiskopf partnership resulted in the design or updating of more than twenty golf courses including:
- Double Eagle Club
- Northwood Club 
- Troon North Golf Club 
- Scottsdale TPC 
- Forest Highlands 
- Blackstone Country Club