Christina Nielsen (born 10 January 1992 in Hørsholm, Denmark) is a Danish racing driver who is the first female driver to win a WeatherTech SportsCar Championship series title. She is the daughter of racing driver Lars-Erik Nielsen, who raced in the 24 Hours of Le Mans in the 2000s.
Nielsen started her karting career in 2007. After karting from 2007 to 2009, Nielsen made her formula racing debut in 2010 in the Danish Formula Ford Championship. Finishing the season in 9th position.
After doing two one off appearances in the ADAC Formel Masters in 2010, Nielsen went on to do a full season in 2011. For 2012, Nielsen switched to the Porsche Carrera Cup Germany running in the B-class. She ended the season 5th in class.
The Dane continued in the IMSA SportsCar Championship in 2016, joining Scuderia Corsa to drive alongside Alessandro Balzan in a GTD-class Ferrari. She won the 12 Hours of Sebring with Jeff Segal as third driver. With another win at 6 Hours of Watkins Glen and four additional podiums throughout the season, Nielsen and Balzan won the 2016 IMSA SportsCar series Championship, with a 299-point total for the year, and thus Nielsen became the first woman to win a major full-season professional sports car championship in North America.