Marikina's 1st congressional district is one of the two congressional districts of the Philippines in the city of Marikina. The district covers the southern Marikina barangays of Barangka, Calumpang, Industrial Valley Complex, Jesus de la Peña, Malanday, San Roque, Santa Elena, Santo Niño and Tañong.
The district been represented in the House of Representatives of the Philippines since 2007. An amendment to the 1996 Marikina City Charter, passed in 2006, created the district from Marikina's at-large congressional district.
Marcelino Teodoro of the National Unity Party (NUP) has represented the district since 2025.