Puerto Rico Senatorial District I, also known as the Senatorial District of San Juan, is one of the eight senatorial districts of Puerto Rico. It is currently represented by Miguel Romero and Henry Neumann (both from the New Progressive Party).
The Senatorial District I covers all of the capital city of San Juan, as well as Aguas Buenas, and some regions of Guaynabo. It has an approximate population of 462,035.
In previous distributions, the territory covered by the Senatorial District I has changed. Originally, the District only covered the capital city of San Juan. In the 1983 redistribution, the San Juan sector of Sabana Llana was assigned to the District of Carolina, but was reassigned to San Juan again in 1991.
In the 2002 redistribution, some regions of Guaynabo were assigned to the district, and in the most recent redistribution (2011), the municipality of Aguas Buenas was also assigned to the district.