Rodriguez, officially the Municipality of Rodriguez (Tagalog: Bayan ng Rodriguez), formerly known and still commonly known as Montalban, is a 1st class municipality in the province of Rizal, Philippines. According to the 2020 census, it has a population of 443,954 peopleā making it the most populous municipality in the country. Pending an affirmation through plebiscite, Republic Act No. 11812 repealed Batas Pambansa Blg. 275 and intend to revert to its original municipal name, Montalban.
It is the northernmost town in the province and comes after San Mateo, Rizal, and Quezon City coming from Metro Manila. The town is located on the slopes of the Sierra Madre mountain range and it is the largest town in Rizal province with an area of 312.70 square kilometres (120.73 square miles). It is also the location of the Montalban Gorge that is associated with the Legend of Bernardo Carpio.