International Ice Hockey Federation -

Ice hockey, is a team sport played on ice. Ice Hockey is a speedy and physical sport.

Ice hockey is most popular in areas that are sufficiently cold for natural, reliable seasonal ice cover, though with the advent of indoor artificial ice rinks it has become a year-round pastime at the amateur level in major metropolitan areas such as cities that host a National Hockey League (NHL) or other professional-league team

 
http://www.iihf.com/