Ryan Patrick Shannon (born March 2, 1983) is an American professional ice hockey player. Shannon is currently playing for the Ottawa Senators of the National Hockey League (NHL).
Shannon was raised in Darien, Connecticut, where he played youth hockey. After four years of high school hockey at The Taft School in Watertown, Connecticut, Shannon began college hockey with Boston College in 2001–02. In his freshman year, he received the team's Bernie Burke Award as top rookie after recording 25 points in 38 games. In his senior year, Boston captured the Hockey East championship (The Lamoriello Trophy) and Shannon was named to the Hockey East All-Conference First Team and the All-American East Second Team for the second consecutive season. Scoring 45 points, he earned team MVP honours with two other teammates. Internationally, Shannon represented the U.S. at the 2003 World Junior Championships in his sophomore year.
Undrafted, Shannon was signed as a free agent by the Mighty Ducks of Anaheim on April 3, 2005. He played for their American Hockey League (AHL) affiliate, the Portland Pirates, in 2005–06 and immediately began an eight-game scoring streak to begin the season. Midway through the season, he participated in the 2006 AHL All-Star Classic for Planet USA and won the fastest skater competition. Finishing his AHL rookie campaign with 86 points in 71 games — ninth overall in league scoring and second among rookies to Patrick O'Sullivan — he was named to the All-Rookie Team. Shannon added 22 points in 19 playoff games as Portland was eliminated in the seventh game of the Calder Cup semi-finals.