Michael Alan Singer (or Michael A. Singer; born 6 May 1947) is a bestselling author, a meditation center founder, and a former software programmer. His two books, The Untethered Soul (2007) and The Surrender Experiment (2015), were New York Times bestsellers. In 1975, he founded Temple of the Universe, a long-established yoga and meditation center for people of any religion or belief to experience inner peace.

On the business side, Singer is a notable figure in the medical software industry. He created the Medical Manager, one of the very first programs that helped medical practitioners to digitize their medical records. The Medical Manager is now a recognized achievement archived in the Smithsonian Institution. When Medical Manager was acquired by WebMD, a billion-dollar public company which focused on medical data management Singer continued as executive VP, physician software strategies, and head of research and development and chief software architect of WebMD Practice Services. He resigned from WebMD in 2005 and focused on writing.