Rantau (Chinese: 晏斗) is a small town and a mukim in Seremban District, Negeri Sembilan, Malaysia.

It is surrounded by several hamlets including Kuala Sawah, Siliau, Pedas and Ayer Kuning, and is the main town in the region with facilities like banks, mini market, quick-service restaurants and a post office.

Among them is the former Chief Minister of Negeri Sembilan Mohamad Hasan; Dato VS Mogan former EXCO member of the Negeri Sembilan State Government; Puan Malar Rajaram a Bahasa Melayu Radio Host and Producer in Canada for 15 years who had returned to homeland and contested in the 2019 Rantau By-election; Mr Maha Sinnathamby, Rantau born Australian developer of Greater Springfield Development in Queensland, the largest master-planned community in Australia.

Finally heading west is the Jalan Rantau-Siliau N6 which connects the Rantau to Siliau and Lukut at the Federal Route 53.

Bujai Bin Dato' Raja Matshah lived near the mosque till his death in 1924 and was buried in front of it.