Bruce L. Rastetter (born 1957) is an American agribusiness executive, entrepreneur, and prominent Republican political donor based in Iowa. He has built a significant career in the agricultural sector, founding Heartland Pork Enterprises, a major pork production company, and later expanding into the energy sector by starting Hawkeye Energy Holdings, one of the largest ethanol producers in the United States, which he later sold 80% of to a private equity firm. In 2011, he established Summit Agricultural Group, which specializes in carbon capture and storage solutions for Iowa's ethanol plants, aiming to reduce emissions and promote sustainable practices in the industry. His business ventures reflect a focus on innovative agricultural and biofuel technologies, contributing to Iowa's economy as a key player in the state's agribusiness landscape. Beyond business, Rastetter is an influential Republican political donor, supporting conservative causes through a network of political action committees (PACs). He has been involved in Iowa politics, backing candidates and initiatives aligned with Republican priorities, including his financial ties as a supplier to figures like Senator Charles Grassley. His donations and advocacy have positioned him as a key influencer in conservative networks within the Midwest. Rastetter's activities have drawn attention for their intersection of business and politics, with his companies benefiting from policy environments favorable to agribusiness and biofuels. While celebrated for entrepreneurial success, his political funding has sparked debates on influence in elections, though no major legal controversies are publicly documented in available records.