A pressure sensor according to an aspect of the present disclosure includes: a first pressure sensitive element including a first conductive layer including first projections having conductivity, first wiring layers, and a first dielectric layer provided between the first projections and the first wiring layers; and a second pressure sensitive element including a second conductive layer including second projections having conductivity, second wiring layers, and a second dielectric layer provided between the second projections and the second wiring layers. The first pressure sensitive element and the second pressure sensitive element are stacked on each other.