Provided is an electric connector which includes: a housing; and a pair of reinforcement brackets reinforces both end sides of the housing in a longitudinal direction, wherein the housing has a bottom wall, a pair of short walls, a pair of long walls, an island-shaped protruding wall surrounded by the short walls and the long walls, and pairs of corner portions between a corresponding pair of short and long walls, each reinforcement bracket has an outer plate portion, a short wall protection portion, a pair of side plate portions, a pair of long wall protection portions, a pair of connection portions connecting the outer plate portion to the side plate portions, and a pair of corner protection portions, and each corner protection portion extends from either one of the outer plate portion or the side plate portions, and is formed to cover an upper surface of the corner portions.