Formula LO, previously known formally as LO Formel Lista Junior, was an open wheel racing series based in mainland Europe, which often ran as a support series to the Formula Renault 2.0 Switzerland. The first season was in 2000 and is based in Switzerland, and governed by the country's National Motorsport Authority. Because motorsports are essentially banned in Switzerland, the racing takes place on circuits in surrounding nations such as France, Italy and Germany.