Sonya Thomas (born Lee Sun-kyung on July 26, 1967), also known by her nickname The Black Widow, and "The Leader of the Four Horsemen of the Esophagus", is a South Korean-born American competitive eater from Alexandria, Virginia.

Eating 40 hot dogs in 10 minutes, Thomas earned the inaugural pink Pepto Bismol Belt and won $10,000.

On September 2, 2012 Joey Chestnut consumed 191 wings, weighing 7.61 pounds (3.45 kg) in 12 minutes to take competitive-eating trophy from the five-year champion Sonya Thomas.

At the Buffalo Wing Festival in Buffalo, NY, Ms. Thomas lost to Eric "Badlands" Booker in a chicken wing contest and then lost a waffle eating contest in Atlanta the next day to the fast-rising rookie Joey Chestnut, giving her a two event losing streak to replace her winning streak.

Thomas' waffle defeat was avenged on Labor Day, however, when she out-ate Chestnut in the Chattanooga, TN Krystal Square Off qualifier.

The civil engineering student from San Jose State had defeated Thomas in three of their last four match-ups and was the first eater to lead Kobayashi for the majority of a contest at the Krystal Square Off in Chattanooga the previous week.

Thomas' continued improvement, along with Chestnut's rapid ascent, gave Kobayashi more to worry about in 2006 than at any previous time in his dominant career.

On August 13, 2006, Thomas won her Asian debut competition in Hong Kong while setting her 28th eating record, by consuming 17 Chinese-style lotus seed buns in 12 minutes.