Richard Ortiz, known professionally as F1lthy, is an American record producer and songwriter. He is a co-founder of the rap collective Working on Dying and a producer for many rappers such as Playboi Carti and Lil Yachty, and a member of Playboi Carti's Opium record label. He is known for "crafting sounds as guttural and crunchy as his name suggests," and minimalist melodies.