Via LA Weekly:
This list is in no particular order. Lists like these often get confusing because they beg the question, what is Punk? Could Wire, also be considered Post Punk? Where do you put bands like PIL, Joy Division, Television, Patti Smith, Suicide, and Killing Joke? What about Gang of Four, 999 and the Banshees?
For me, as a lean definition, I go by the classic UK 1977 graduating class, Pistols, Clash, etc., and go from there. Beyond that, there were a lot of great Punk Rock bands who never made full albums. The Machines, The Killjoys, Some Chicken, and countless others. So many great bands and great records in this genre and the surrounding/resulting genres. Best bet is just to get the music playing for as long as possible.