Salethu is a village in Maharajganj block of Rae Bareli district, Uttar Pradesh, India. Located 8 km from Maharajganj, the block headquarters, Salethu has a lake which is fairly deep and narrow but dries up during the summer. As of 2011, the village's population is 4,782, in 858 households. It has two pre-primary schools and no healthcare facilities.