Keith's designation is retroactive to Nov. 29, while Shaw's dates back to Nov. 30. Keith is suffering from a groin injury, while Shaw continues to be in the concussion protocol.
Keith has one goal and five assists in 25 games this season. Shaw has totaled 10 points (three goals, seven assists) in 26 games.
Players must miss at least seven days when they're on injured reserve, so with their retroactive designations, Keith and Shaw will be eligible to return soon if they get healthy.
Chicago plays at New Jersey on Friday night. It's unclear if either Keith or Shaw can return when the Blackhawks face the Coyotes on Sunday.