Jacob MacDonald (born February 23, 1993) is an American professional ice hockey defenceman who is currently playing under contract as a prospect to the Colorado Avalanche of the National Hockey League (NHL).
MacDonald grew up in Brighton, Michigan, where he played in Compuware's midget hockey program before progressing to junior hockey in the United States Hockey League with the Waterloo Black Hawks. He committed to and played collegiate hockey at Cornell University of the Hockey East. While developing his defensive awareness with Cornell, MacDonald struggled offensively at the collegiate level, registering just 21 points through 104 games in his four-year career.
As a free agent following his senior season with the Big Red in 2014–15, MacDonald made his professional debut in signing with the Elmira Jackals of the ECHL to end the regular season on March 26, 2015. In continuing with the Jackals in the 2015–16 season, MacDonald rediscovered his offensive touch in recording 17 goals and 37 points from the blueline to be selected to the ECHL's All-Rookie Team. He made his debut in the American Hockey League appearing in a one-game on loan with the Springfield Falcons.