Lingard has not featured for United since he injured his knee on the opening day of the season against Swansea.
The 22-year-old is now back to full fitness and hopes to play a key role at Derby, who are second in the Sky Bet Championship.
A tweet from United read: "Jesse Lingard has joined Championship club Derby County on loan until the end of the season
Best of luck! #mufc."
Derby boss Steve McClaren, who also signed Tom Ince on loan from Hull earlier on deadline day, told Derby's website: "He strengthens the attacking options that we can call upon and given we've lost Jordon Ibe and Johnny Russell in the last few weeks it was important to strengthen in that particular area of the side."
Source : PA
Source: PA