Plaridel, officially the Municipality of Plaridel (Tagalog: Bayan ng Plaridel), is a 1st class municipality in the province of Bulacan, Philippines. According to the 2020 census, it has a population of 114,432 people. With the expansion of Metro Manila, the municipality is now part of Manila's built-up area which reaches as far north as San Ildefonso, Bulacan.
Plaridel is 18 kilometres (11 mi) from Malolos and 41 kilometres (25 mi) from Manila.