No. It's probably Homer Simpson if we're talking world wide recognition. If we're talking more pandemonium and love and worship of a character, probably The Doctor from Doctor Who. If we're talking about the most universal character, Sherlock Holmes of literally any TV version of Sherlock Holmes because there are hundreds.
There are also a number of Star Trek characters to choose from. Trekkies are the most dedicated fans, and they'll make sure everyone knows how iconic Spock is.