Abbas Sharif, 59, touched a live wire at a mosque near his family's residence in Raiwind while leaving after the Friday prayer, a police officer said.
He was taken to the nearby Sharif Medical Complex, where doctors pronounced him dead.
A former member of the National Assembly or lower house of parliament, Abbas Sharif was not active in politics or the family business.
He is survived by his wife, two sons and as many daughters.
Lahore: Former Pakistani premier Nawaz Sharif's younger brother Abbas Sharif died of an electric shock in this eastern city on Friday.
First Published: Friday, January 11, 2013, 16:33