[overanalytcl]

Either Rasmus Ledorf or Bjarne Stroustrup. Arguably, another Danish programmer contributed to the history of Pascal: Peter Naur (and also Jørn Jensen, but he was more into implementing ALGOL 60 compilers).

Honorable mention to DHH, although he didn't create a programming language. And also to Lars Bak for being the lead developer on V8.

[danielovichdk]

Would be only fair to mention Paul Henning Kamp here as well. FreeBsd, md5, varnish.

[fanf2]

Lars Bak was also the lead designer of Dart