Katherine Elizabeth Arrington (née Stolark; born December 6, 1970) is an American politician who was in the South Carolina House of Representatives from the 94th district for a single term, from 2017 to 2019.

[6] After high school, Arrington attended Canisius College in Buffalo, New York, but left during her sophomore year to marry her first husband, Doug Homrich.

[6] After selling a business she started called the Breakfast Club of America, she used the proceeds to begin a career in real estate development.

[7] Arrington announced she would run for Congress in South Carolina's 1st congressional district, challenging Mark Sanford for his seat in the House in the 2018 election cycle.

[11] On the day of the June 12 Republican primary, Trump endorsed Arrington over Sanford, saying she would be "tough on crime," and would "continue our fight for lower taxes.

[5] The Department placed her on leave and suspended her security clearance in 2021 due to allegations of unauthorized disclosure of classified information from a military intelligence agency and misuse of office.

[16][17][18] On February 8, 2022, Arrington announced that she would again seek the nomination for South Carolina's 1st congressional district, this time against incumbent Nancy Mace.