Amdahl may refer to:
People Einar Amdahl (1888–1974), Norwegian theologist Bjarne Amdahl (1903–1968), Norwegian pianist and composer Douglas K. Amdahl (1919–2010), American lawyer and judge from Minnesota Gene Amdahl (1922–2015), formulator of Amdahl's law of parallel computing and founder of Amdahl Corporation
Companies Amdahl Corporation, American manufacturer of IBM-compatible mainframe computers