Uncle SAm may be:
Uncle Sam :is an iconic figure and a national personification of the United States of America.

Uncle Sam may also mean:

Uncle Sam (comics) - the Quality Comics/DC Comics character.
Uncle Sam (graphic novel) - the two-part comic book series by Steve Darnall and Alex Ross.
Uncle Sam (diamond)
Uncle Sam (film)
Uncle Sam (singer)
Uncle Sam Cereal
Uncle Sam (song) by Madness
The Uncle Sam Parking Garage and shopping center in Troy, NY

reference:
http://en.wikipedia.org/wiki/Uncle_Sam_%28disambiguation%29

Popular name for the United States, apparently arising from the initials US It came into use during the War of 1812 and was portrayed as a character wearing a red white and blue suit with stars and stripes.

Uncle Sam is a national personification of the United States (US), with the first usage of the term dating from the War of 1812 and the first illustration dating from 1852

Uncle Sam is a national personification of the United States (US), with the first usage of the term dating from the War of 1812 and the first illustration dating from 1852. He is often depicted as a serious elderly white man with white hair and a goatee, with an obvious resemblance to Presidents Andrew Jackson and Abraham Lincoln, and dressed in clothing that recalls the design elements of the flag of the United Statesfor example, typically a top hat with red and white stripes and white stars on a blue band, and red and white striped trousers.