Christian Ruud is a Norwegian former tennis player who turned professional in 1991. He achieved a career-high singles ranking of world No. 39 in October 1995, reaching the fourth round of the 1997 Australian Open and the quarterfinals of the 1997 Monte Carlo Masters. He retired in 2001 after the 2001 French Open. He was the highest-ranked Norwegian male player ever on the ATP Tour until his son Casper Ruud surpassed him in February 2020.