The Southern Tagalog Arterial Road (STAR), commonly known as the STAR Tollway, is a two-to-four-lane 41.9-kilometer (26.0 mi) controlled-access toll expressway in the province of Batangas in the Philippines. It is operated by STAR Infrastructure Development Corporation. The expressway is signed as E2 of the Philippine expressway network, alongside the South Luzon Expressway and unspecified portions of the Skyway. The expressway starts at the interchange with the Pan-Philippine Highway and the South Luzon Expressway in Santo Tomas and runs southward, near Diversion Road, to Batangas City. It passes through the cities and municipalities of Tanauan, Malvar, Lipa, San Jose, and Ibaan.

The Philippine expressway network, also known as the High Standard Highway Network, is a controlled-access highway network managed by the Department of Public Works and Highways (DPWH) which consists of all expressways and regional high standard highways in the Philippines.