The 2013 Southern California Open was a professional women's tennis tournament played on hard courts.

It was the 4th edition of the tournament since its resumption in 2010, and a Premier tournament on the 2013 WTA Tour.

It took place in Carlsbad, California, United States from July 29 to August 4, 2013.

Fifth-seeded Samantha Stosur won the singles title.

Samantha Stosur defeated Victoria Azarenka, 6–2, 6–3 Raquel Kops-Jones / Abigail Spears defeated Chan Hao-ching / Janette Husárová, 6–4, 6–1 The following players received wildcards into the singles main: The following players received entry from the qualifying draw: The following pairs received wildcards into the doubles main draw: