The Blues boss was mocking in his assessment of referee Mike Dean's performance when his side lost 2-1 to Sunderland at Stamford Bridge on April 19.
The FA charged Mourinho with misconduct, which he challenged, but the association has decided that his sarcastic rant - which also included referee chief Mike Riley - was untoward and have hit him with the sanction.
"Following an independent regulatory commission hearing, Jose Mourinho has been fined £10,000 in relation to comments he made after Chelsea's game against Sunderland on April 19, 2014," read a FA statement.
"While the commission did not find that Mourinho's post-match comments called into question the integrity of the referee appointed to the above fixture and/or the integrity of Mike Riley, general manager of the Professional Game Match Officials Limited, they did find that the comments brought the game into disrepute and the charge for improper conduct was found proven."
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