O2 Arena (formerly Sazka Arena, stylised as O2 arena) is a multi-purpose arena, in Prague, Czech Republic. It is home to HC Sparta Prague of the Czech Extraliga and is the third-largest ice hockey arena in Europe.

Hockey Club Sparta Praha, commonly known as HC Sparta Prague, is a Prague-based Czech professional ice hockey team playing in the Czech Extraliga. The club has won four Czech championships (most recently in 2007) and four Czechoslovak championships, as well as two Spengler Cups, making it one of the most successful hockey clubs in Czech history. The team HC Sparta Praha plays its home games at O2 Arena, the largest arena in the country.