A pressure sensor, comprising: a hollow sensor main body having a cavity formed therein and having a communication opening through which the inside and the outside of the cavity communicate with each other; a cantilever having a lever main body and a plurality of lever support portions (21A, 21B) which connect the lever main body and the sensor main body and support the lever main body in a cantilever state, is disposed so as to cover the communication opening, and is configured to be bent according to a pressure difference between the cavity and the outside of the sensor main body; and a displacement detection unit having a detection electrode formed on the sensor main body, a main body-resistance portion formed on the lever main body, and a lever-resistance portion formed on the lever support portion (21A, 21B), and is configured to detect displacement of the cantilever based on resistance variation in resistance values of the main body-resistance portion and the lever-resistance portion, characterized in that a division portion is formed at the lever support portion (21A, 21B), and the division portion divides the lever-resistance portion into a first resistance portion which is electrically connected to the detection electrode in series and a second resistance portion which is positioned so as to be closer to the other adjacent lever support portion (21A, 21B) than the first resistance portion, and electrically separates the first resistance portion and the second resistance portion from each other, and wherein the first resistance portion is electrically connected to the detection electrode via a parallel path of a first path passing through the main body-resistance portion and a second path passing through the second resistance portion. a hollow sensor main body having a cavity formed therein and having a communication opening through which the inside and the outside of the cavity communicate with each other; a cantilever having a lever main body and a plurality of lever support portions (21A, 21B) which connect the lever main body and the sensor main body and support the lever main body in a cantilever state, is disposed so as to cover the communication opening, and is configured to be bent according to a pressure difference between the cavity and the outside of the sensor main body; and a displacement detection unit having a detection electrode formed on the sensor main body, a main body-resistance portion formed on the lever main body, and a lever-resistance portion formed on the lever support portion (21A, 21B), and is configured to detect displacement of the cantilever based on resistance variation in resistance values of the main body-resistance portion and the lever-resistance portion, characterized in that a division portion is formed at the lever support portion (21A, 21B), and the division portion divides the lever-resistance portion into a first resistance portion which is electrically connected to the detection electrode in series and a second resistance portion which is positioned so as to be closer to the other adjacent lever support portion (21A, 21B) than the first resistance portion, and electrically separates the first resistance portion and the second resistance portion from each other, and wherein the first resistance portion is electrically connected to the detection electrode via a parallel path of a first path passing through the main body-resistance portion and a second path passing through the second resistance portion.