A connector is equipped with a housing capable of being fitted in a mating connector which houses a plurality of mating terminals connected to each other electrically and a holder which is attached to the housing. The housing has a plurality of terminal housing rooms which house a plurality of terminals. The holder has a plurality of noise reduction member holding rooms which hold a plurality of noise reduction members each of which reduces noise occurring in a corresponding one of the plurality of terminals housed in the plurality of terminal housing rooms, in such a manner that the plurality of noise reduction members are disposed adjacent to front end surfaces of corresponding ones of the plurality of terminals in a state that attachment of the holder to the housing is completed.