Ryan G. Callahan (born March 21, 1985) is an American professional ice hockey right winger and an alternate captain for the Tampa Bay Lightning of the National Hockey League (NHL). He previously played for the New York Rangers, serving as their captain. He is of Italian and Irish descent.
Callahan played one year of high school ice hockey for Hilton High School. He then began his junior career with the Rochester Junior Americans of the Empire Junior B Hockey League, where he played for two seasons, 1999 to 2001. He then played with the Syracuse Jr. Crunch and Buffalo Lightning of the OPJHL before moving on to a four-year Ontario Hockey League (OHL) stint with the Guelph Storm, where he played alongside future Ranger teammate Daniel Girardi. Callahan turned professional with the Hartford Wolf Pack of the American Hockey League (AHL), where he played most of the 2006–07 season.