The Witness is an interactive fiction computer game published by Infocom in 1983. Like Infocom's earlier title Deadline, it is a murder mystery. The Witness was written in the ZIL language for the Z-machine, which allowed it to be released simultaneously on many popular computer platforms including the Apple II and the Commodore 64. It is Infocom's seventh game.

The Witness is an interactive fiction computer game published by Infocom in 1983. Like Infocom's earlier title Deadline, it is a murder mystery. The Witness was written in the ZIL language for the Z-machine, which allowed it to be released simultaneously on many popular computer platforms including the Apple II and the Commodore 64. It is Infocom's seventh game.