Port Dickson is a federal constituency in Port Dickson District, Negeri Sembilan and Alor Gajah District (), Malacca, Malaysia that is represented in the Dewan Rakyat from 1959 to 1974 and from 2018 to present. This is only constituency located in two states at same parliamentary seat.
The federal constituency was created in the 1958 redistribution, but it was abolished in the 1974 redistribution. However, in 2018 the Port Dickson federal constituency was re-created and replaced the Telok Kemang federal constituency following the 2018 redelineation and is mandated to return a single member to the Dewan Rakyat under the first past the post voting system.
As of 2020, Port Dickson has a population of 128,954 people.
According to the gazette issued on 18 July 2023, the Port Dickson constituency has a total of 32 polling districts.