Monte Davidoff (/ˈmɒnti ˈdeɪvɪdɒf/; born 1956) is an American computer programmer. He graduated from Nicolet High School in Glendale, Wisconsin in 1974. He went on to Harvard University, where he majored in applied mathematics, the department at Harvard that, at the time, included computer science. He also worked at WHRB, the college radio station. He graduated from Harvard in 1978.
Davidoff is best known for writing the floating-point arithmetic routines for Altair BASIC while he was at Harvard. The routines were subsequently reused in Microsoft BASIC products for other systems. He later worked at Honeywell Information Systems on the Multics project, Tandem Computers, Ready Systems, and Stratus Computer. Since 2000 he has consulted through his own company, Alluvial Software.