Jake Douglas Layman (born March 7, 1994) is an American professional basketball player for SeaHorses Mikawa of the Japanese B.League.

Born in Norwood, Massachusetts, Layman was considered a "late bloomer" at King Philip Regional High School and didn't even start for his AAU team.

[5] Layman was recruited by Massachusetts native and then Maryland assistant basketball coach, Scott Spinelli.

He was subsequently traded to the Portland Trail Blazers on draft night in exchange for a future second-round pick and cash considerations.

[14] He made his NBA debut on November 1, 2016, scoring 17 points in eight minutes off the bench in the Trail Blazers' 127–104 loss to the Golden State Warriors.

[15] On July 8, 2019, Layman signed a 3-year, $11.5 million contract with the Blazers and was subsequently traded to the Minnesota Timberwolves as a part of a sign-and-trade deal in exchange for the draft rights to Bojan Dubljević.

[22] In the summer of 2012, Layman was on the under-18 United States national team that defeated Brazil for the gold medal in the FIBA Americas championship.

In an opening round game versus Mexico, Layman led the U.S. team in scoring with 18 points.

I feel like I could be one of those guys that hangs out in the perimeter and just shoots 3's and slashes to the basket when he needs to.”[23] Layman has four brothers: Connor, Jimmy, Ryan and Kyle.