The Coloni CN1 is an open-wheel formula racing car, designed, developed, and built Italian manufacturer, team, and constructor, Scuderia Coloni, for the one-make World Series by Nissan spec-series, between 1998 and 2001.

It was powered by a naturally-aspirated 2.0 L (120 cu in) Nissan SR20 four-cylinder engine, producing between 250–280 hp (190–210 kW).