Edward Nash Yourdon is a computer consultant, author, and lecturer and a recognised pioneer in a software engineering methodology - structured programming.

Ed was the lead developer of the Structured Systems Analysis and Design Methodology (SSADM) of the 1970s, and was a co-developer of the Yourdon/Whitehead method of object-oriented analysis/design.

He has authored over 550 technical articles and authored or coauthored 26 computer books since 1967.

He is a graduate of MIT.

During the late 1990s, he was one of the leading proponents of the theory that the Year 2000 problem would lead to a collapse of civilization, or at least protracted economic depression and technological breakdown on a wide scale. He wrote several books and produced at least one video putting forth that theory (and offering advice on how to survive the coming crisis), though his current website makes little or no mention of this.

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