Riley Michael Sheahan (born December 7, 1991) is a Canadian professional ice hockey centre who is currently an unrestricted free agent. He most recently played for the Florida Panthers of the National Hockey League (NHL). Sheahan was drafted 21st overall by the Detroit Red Wings in the 2010 NHL Entry Draft. Sheahan performed well enough at Canada's 2011 National Junior Team prospect camp in the summer of 2010 and was asked to come back to the Selection Camp in December 2010.
Sheahan played junior B ice hockey in the Greater Ontario Junior Hockey League with the St. Catharines Falcons playing both centre and wing. During his first season with the Falcons, Sheahan played with Atlanta Thrashers first round pick Daultan Leveille. Sheahan collected 49 goals and 85 assists over two seasons with the Falcons.
Following the two seasons in St. Catharines, Sheahan decided to forgo major junior hockey with the Erie Otters of the Ontario Hockey League (OHL) to play NCAA Division I college ice hockey with the University of Notre Dame Fighting Irish of the Central Collegiate Hockey Association (CCHA).