A man sporting a dragon tattoo can have a different meaning as compared to a woman sporting the same tattoo design. On men, dragon tattoos can symbolize toughness and power. If a girl carries it, it suggests that she has a strong personality, and never listens to whatever opinions people have of her.
The dragon has been created to represent strength, or as a defender of something valuable like a treasure chest or a bag of valuable gems. Dragons have both been given good and evil personalities in legends, television, literature, and pop culture. So a tattoo of a dragon can bring up these types of ideas, but of course, it varies from owner to owner and the artist.