The Aston Villa manager is furious over what he claims were two poor decisions - Webb's refusal to award a penalty when John Mikel Obi fouled Gabby Agbonlahor and the referee's failure to send off John Terry for an horrific tackle on James Milner.
O'Neill said: 'There is a no doubt it is a sending-off. It was desperately poor and I'm just delighted that James was still fit to play. He could have been out for a long, long time.
Not a leg to stand on: Aston Villa midfielder James Milneris the victim of a horror tackle fromJohn Terry, much to the disgust of manager Martin O'Neill
'I'll be contacting Mike. I spoke to him over the decision in the Carling Cup (not to send off Nemanja Vidic for a foul on Agbonlahor).
'He was fair and sympathised. I'm sure he will sympathise with my plight on Monday.
'I hate maligning referees. It's an incredibly difficult job. But I thought that today was poor. It was straightforward and game-changing.
Having words: Like Stewart Downing, O'Neill wants to probe ref Howard Webb
'I don't know why people don't just apply the laws and do it.
'There wasn't a person in the stadium, including the players, who didn't think it was a penalty. I think Chelsea have accepted that.'
Aston Villa 0 Chelsea 3: Only the double will do for back on track TerryAston Villa boss O'Neill accuses Terry of trying to end Milner's career ASTON VILLA FC