Piezoelectric vibrator and oscillator

Provided are a piezoelectric vibrator and an oscillator with which it is possible to ensure measurement accuracy of an oscillation frequency. A piezoelectric vibrator (10) is provided with a piezoelectric vibrating piece and a package (2) having a chip mounting region (40). The chip mounting region (40) has a shape having a longitudinal direction (L) and a lateral direction (W). In the chip mounting region (40), monitor terminals (41, 42), chip electrodes (61 to 66), and connection wires (71 to 76) are formed. The monitor terminals (41, 42) are provided at different positions in the longitudinal direction (L). The side edges (41a, 42a) of the monitor terminals (41, 42) respectively face the connection wires. When a first half region (40A) and a second half region (40B) of the chip mounting region (40), which are bounded by the central axis (O1), are compared, the total area of the chip electrodes and the connection wires in the first half region (40A) is smaller than the total area of the chip electrodes and