Yes, the title Pride and Prejudice certainly does very aptly apply to many, probably all, of the characters in Pride and Prejudice. In particular, it fittingly applies to both our heroine and our hero, Elizabeth Bennet and Fitzwilliam Darcy. Elizabeth is guilty of judging, through prejudice, Mr. Darcy to be proud and unfeeling. Lieutenant Wickham spurs her prejudice with stories of Mr. Darcy having taken away his church position, when in truth it was Wickham who had wronged Mr. Darcy and his sister. Wickham’s stories were told out of his own motives and his own prejudices against Mr. Darcy.
Mr. Darcy is guilty of, out of prejudice, believing that people who lack money and social status are some how inferior. He does, however, make a few correct judgments about the Bennet family being unprincipled.
Characters throughout the rest of the story can also be shown to be guilty of both their pride and their prejudices.
In a brief answer, the title does refer to the major characters(and not only) of the book.To begin with Pride refers to both Elizabeth and Mr Darcy since it is pride that Elizabeth traces in Mr Darcy's character and "rejects" him and it is pride again (this time her pride) that prevents her from seeing Mr Darcy as a "new", different man when he is finally revealed to be a good and honest man who acts on behalf of those he loves in a way he thinks best. As far as prejudice is concerned, again it applies to both protagonists since Mr Darcy is clearly prejudiced against people of a lower social class, those living in the country side, as we see him acting quite arrogantly in the first half of the book.Elizabeth isn't far from being prejudiced herself, since we see her having a strong opinion about all the matters (love,ways of entertainment,people's characters,people's state of brilliance etc)she rarely changes her way of thinking, which most times makes her seem cynical,ironic, even stubborn.
In general both characters "suffer" from a combination of both these charateristics which set the motion of this story, characteristics which in the end, both of them must learn to tame and overcome in order to be together and live happily ever after.