Magistrates in Swansea, south Wales, sent 21-year-old biology undergraduate Liam Stacey to prison after admitted the charge at a previous hearing last week.
Stacey was reported to police and arrested after posting a number of tweets on the micro-blogging site mocking the player, who collapsed with a cardiac arrest during Bolton's FA Cup quarter-final tie with Tottenham Hotspur on March 17.
The student was taken to task by other users after he used offensive language to say that the player had died, prompting him to respond with a tirade of personal abuse.
Muamba, whom doctors said was effectively dead for 78 minutes as they administered artificial resusciation, has since made a "miraculous" recovery but is still in a serious but stable condition in intensive care at a London hospital.
In a separate case last Wednesday, magistrates in Newcastle, northeast England, ordered another student to complete a two-year community order with 240 unpaid work for sending a string of abusive tweets to former footballer Stan Collymore.
Newcastle University student Joshua Cryer, 21, admitted sending the messages to the former Liverpool, Aston Villa and Nottingham Forest player, who now works as a radio and television pundit.
British student jailed for offensive tweets about Muamba
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