(Ray) Tim Teitelbaum (born April 12, 1943, United States) is an American computer scientist known for his early work on integrated development environments (IDEs), syntax-directed editing, and incremental computation.
As an educator and faculty member of the Cornell University Computer Science Department since 1973, he was recognized for his large-scale teaching of introductory programming, and for his mentoring of highly successful graduate students.
As a businessman, he is known for having co-founded GrammaTech, Inc.