No, the relative atomic mass (also known as atomic weight) does not include the mass of electrons. Relative atomic mass refers to the average mass of an atom of an element, taking into account the different isotopes and their abundance. It is primarily determined by the mass of protons and neutrons in the atom's nucleus. Electrons have a negligible mass compared to protons and neutrons, so their contribution to the overall mass of an atom is considered to be insignificant for the purpose of calculating the relative atomic mass.