Rizal, officially the Province of Rizal, is a province in the Philippines located in the Calabarzon region in Luzon. Its capital is the city of Antipolo. It is about 16 kilometers (9.9 mi) east of Manila. The province is named after José Rizal, one of the main national heroes of the Philippines. It is bordered by Metro Manila to the west, Bulacan to the north, Quezon to the east and Laguna to the southeast. The province also lies on the northern shores of Laguna de Bay, the largest lake in the country. Rizal is a mountainous province perched on the western slopes of the southern portion of the Sierra Madre mountain range.

Calabarzon, sometimes referred to as Southern Tagalog and designated as Region IV‑A, is an administrative region in the Philippines. The region comprises five provinces: Batangas, Cavite, Laguna, Quezon, and Rizal; and one highly urbanized city, Lucena. It is the most populous region in the Philippines according to the Philippine Statistics Authority (PSA), having over 16.1 million inhabitants in 2020, and is also the country's second most densely populated after the National Capital Region. It is situated southeast of Metro Manila, and is bordered by Manila Bay and South China Sea to the west, Lamon Bay and the Bicol Region to the east, Tayabas Bay and the Sibuyan Sea to the south, and Central Luzon to the north. It is home to places like Mount Makiling near Los Baños, Laguna, and Taal Volcano in Batangas.