Daniel Singer Bricklin (born July 16, 1951) is an American businessman and engineer who is the co-creator, with Bob Frankston, of VisiCalc, the first spreadsheet program.

[2] While a student at Harvard Business School, Bricklin co-developed VisiCalc in 1979, making it the first electronic spreadsheet readily available for home and office use.

[2][7] In 1979, Bricklin and Frankston founded Software Arts, Inc., and began selling VisiCalc, via a separate company named VisiCorp.

Along with Frankston, Bricklin started writing versions of the program for the Tandy TRS-80, Commodore PET and the Atari 800.

[2] His "Dan Bricklin's Overall Viewer" (described by The New York Times as "a visual way to display information in Windows-based software")[11] was released in November 1994.

He is currently the chief technology officer of Alpha Software in Burlington, Massachusetts, a company that creates tools to easily develop cross-platform mobile business applications.

He is a founding trustee of the Massachusetts Technology Leadership Council and has served on the boards of the Software Publishers Association and the Boston Computer Society.

He was elected a member of the National Academy of Engineering in 2003 for the invention and creation of the electronic spreadsheet.

[13] In 2003, Bricklin was given the Wharton Infosys Business Transformation Award for being a technology change leader.