Cuoco, who became engaged to Cook in November, posted photos from the wedding to Instagram on Sunday with the caption "Legally KCSQUARED." The horse enthusiasts posed for photographs among stables at a venue near San Diego, People magazine confirmed.
The actress wore a custom Reem Actress dress and matching cape for the ceremony before changing into a Tadashi Shoji white lace jumpsuit for the reception, according to USA Today.
The couple reportedly started dating in April 2016 after meeting at a horse show. The 32-year-old "Big Bang Theory" star was previously married to tennis player Ryan Sweeting. Her divorce from him after 21 months of marriage was finalised in May 2016.
"I honestly thought I wouldn't get married again," Cuoco said in last month's issue of Cosmopolitan. "My ex ruined that word for me. I married someone the first time who completely changed."
"I knew I just had to be patient," she continued. "I had to go through a lot of things, but it brought me to Karl."
Cook, 27, shared a photograph from their nuptials on Sunday after what he called "the greatest night of my life marrying the love of my life!"
A fan page on Instagram devoted to Cuoco posted videos of the couple reciting their vows at the wedding ceremony, which was officiated by the bride's sister.