Kristina Barrois (born 30 September 1981 in Ottweiler) is a professional German tennis player who has won two German Tennis Championships and reached the second round of all four Grand Slam events, as well as the final of two WTA tournaments. Her career high rank is world number 57, achieved on 9 May 2011.
She began playing tennis at the age of nine in 1991 when she took the sport up herself; began playing at a tennis club, Barrois completed her training as a government inspector at the Saarland Ministry of Justice before turning professional in 2005.
On 14 December 2008, she won her second German Tennis Championship against the unseeded Lydia Steinbach.
In 2009 she started off well as she qualified for Auckland but lost to up-and-coming Russian teenager Anastasia Pavlyuchenkova. She then fell in the qualifying round of the Hobart event to British player Melanie South. She also reached the first round of the Australian Open, where she pushed the number-four seeded Russian, Elena Dementieva, but eventually lost in three sets. In February she reached the second round in Memphis, but fell short against former world number 30 Michaëlla Krajicek. In March, she played an ITF event where she lost in the quarterfinals to British player Katie O'Brien. She did extremely well at the premier mandatory event in Indian Wells, where she beat French star Alizé Cornet in the second round. She lost, however, to Hungarian Ágnes Szávay in the next round. She reached the second round of the French Open, where Victoria Azarenka beat her and the US Open, where she lost to Dinara Safina.