Martian Memorandum is a dystopian cyberpunk/noir graphic adventure game that was originally released in 1991 for MS-DOS. It was developed and published by Access Software. The game is the second in the series of Tex Murphy mysteries; its immediate sequel is Under a Killing Moon. The game is set in 2039, several years after Mean Streets. The game was re-released in 2014 on Steam with support for Windows, macOS, and Linux.