Intake manifold

An intake manifold (1) includes plural intake pipes (4a, 4b, 4c), a distribution portion (5) connecting to the plural intake pipes (4a, 4b, 4c) and guiding fluid at an inside of the distribution portion (5) to the plural intake pipes (4a, 4b, 4c) and a first protruding portion (15a, 15b, 15c) provided at least a same number of the plural intake pipes (4a, 4b, 4c) at the inside of the distribution portion (5), the first protruding portion (15a, 15b, 15c) being directed to the corresponding intake pipes (4a, 4b, 4c).