Scott Matthew Seiss is an American stand-up comedian, actor, author, and TikToker. He is best known for his repeated portrayal on TikTok of an angry retail worker, popularly referred to as the Angry IKEA Guy, or Angry Retail Guy. The videos are partly based on his experience as a customer service employee at IKEA. Seiss was also cast in the 2023 comedy film Cocaine Bear, as well as in Shortcomings.