The 2003 Norwegian Touring Car Championship season was the 2nd of 3 seasons of the championship. It was decided over six race weekends (comprising twelve races) at three different circuits.
The championship was won by Alf-Aslak Eng with Team Eng's Auto.
Points were awarded to the top ten drivers in a race as follows: 20, 15, 12, 10, 8, 6, 4, 3, 2, 1.