Arena Petrol is a football stadium in Celje, Slovenia. It is the home ground of NK Celje and was also the home ground for Slovenian national football team for their international home matches from 2004 until 2008.
At the time of its opening Arena Petrol was the most modern football stadium in the country. It takes its name from its principal sponsor, the Slovenian oil company Petrol. The stadium opened on 12 September 2003 with its single stand giving it a capacity of 3,600. Two additional stands were built in the following two years, which expanded the capacity of the stadium to 10,085. With the newly constructed north stand it has 13,006 seats as of 2011. The pitch in the stadium is 105 metres long and 68 metres wide and covered with natural grass. The stadium also features a pitch heating system and floodlighting.
In 2004, the stadium replaced the Bežigrad Stadium as the venue for all competitive home matches of the Slovenian national football team. In 2003 it replaced former stadium of Celje Football Club at Skalna klet, which now serves as training facility for members of the first team, and team sometimes plays friendly match.National team matches