NO, leukemia is not contagious and cannot be contracted through contact with others.It is not spread among humans, but it is spread throughout the body by the cells.
Leukemia is cancer of the white blood cells. Like other cancers it is not contagious. White blood cells help to fight infections, so obviously a person with Leukemia is unable to fight off infection. However, if caught in time it is one of the more curable cancers.