The invention addresses a challenge for providing an intake manifold that is able to suppress interference of the intake manifold with fuel injection valves at the time of a collision of a vehicle. In an intake manifold (2), joint faces (32b) and joint portions (33) are connected to each other such that lines L extended from the joint faces (32b) of flange portions (31) and joint faces (33a) of the joint portions (33) are oriented toward positions clear of fuel injection valves (10). In the intake manifold (2), each joint portion (33) is formed such that a length A of the joint face (33a) in a direction in which the joint face (33a) extends is longer than a maximum spaced distance B between the corresponding fuel injection valve (10) and the corresponding flange portion (31).