Snedeker, a nine-time winner on the PGA Tour who was named the US-based circuit's 2007 rookie of the year, joins fellow assistants Stewart Cink, Justin Leonard and Kevin Kisner for the September 26-29 Presidents Cup at The Royal Montreal Golf Club.
"He is a fierce competitor, great team-mate and one of the most respected players on the PGA Tour," Furyk said.
"He will provide a steady voice in the team room, and I will rely on him for insight and advice as we lead our 12 players into Montreal at the end of the month."
A first-time captain's assistant in the Presidents Cup, Snedeker was named last month as one of Keegan Bradley's vice captains for the 2025 Ryder Cup.
Snedeker, 43, represented the US in the 2013 Presidents Cup, compiling a 2-3-0 record, and also played for the United States in the 2012 and 2016 Ryder Cups, where he amassed a 4-2-0 record.
"I was honoured to get the call from Jim and thrilled to accept this role as one of his captain's assistants for the Presidents Cup," Snedeker said.
"He's someone I've looked up to throughout my career and I know will be a strong leader for the US Team at Royal Montreal. My goal is to add a trusted voice to our players throughout the week and do everything I can to help us pull out the win."
The Presidents Cup pits a 12-man US squad against international players from outside Europe, including Australians Jason Day, Adam Scott and Min Woo Lee.
The US team consists of automatic qualifiers Scottie Scheffler, Xander Schauffele, Collin Morikawa, Wyndham Clark, Patrick Cantlay and Sahith Theegala, as well as Furyk's captain's picks - Bradley, Sam Burns, Tony Finau, Brian Harman, Russell Henley and Max Homa.
The United States are 12-1-1 in the Ryder Cup-style Presidents Cup competition with their only loss coming at Royal Melbourne Golf Club in Australia in 1998.
